A telemedicine data transfer system receives telemedicine data from a data source and decides whether to transmit the telemedicine data to a remote end circuit or prevent transmission of the telemedicine data to the remote end circuit based on a result of an evaluation. A telemedicine data transfer system includes image compression and decompression circuits. The decompression circuit may produce decompressed and enhanced telemedicine data. The image compression and decompression circuits include neural networks trained using an objective function to evaluate a difference between a training input data provided to the image compression circuit and a training output data that is output from the image decompression circuit. The training output data is made different from the training input data by a data enhancement operation performed on the training output data prior to the evaluation.
G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
A method used for supporting ophthalmic examinations includes the step of preparing association information between medical information items and ophthalmic examination conditions. Patient information of a patient is transmitted from a client to a server configured to store and manage medical information. The server retrieves medical information of the patient based on the transmitted patient information, acquires a condition corresponding to the retrieved medical information from the association information, and transmits the acquired condition to the client. The client acquires examination data from the patient's eye based on the transmitted condition, and transmits the examination data together with the patient's patient information to the server. The server stores the transmitted examination data and/or an analysis result thereof. The server updates the association information by executing statistical processing on a medical information collection including examination data and/or analysis results of a plurality of patients.
G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/024 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
3.
OCT angiography calculation with optimized signal processing
Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post- calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
A controller included in a blood flow measurement apparatus controls a scanner to iteratively scan one or more cross sections of an interested blood vessel. An image forming unit forms a phase image that represents chronological change in phase difference in the one or more cross sections based on data acquired through iterative scan. An image processor outputs a predetermined signal based on the chronological change in phase difference represented by the phase image. Upon receiving the predetermined signal, the controller controls the scanner to start scan for acquiring blood flow information on the interested blood vessel.
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
G01N 21/17 - Systems in which incident light is modified in accordance with the properties of the material investigated
A61B 3/117 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
A61B 3/14 - Arrangements specially adapted for eye photography
The invention provides a surveying instrument, which comprises a first optical axis deflecting unit disposed on a projection optical axis of a distance measuring light for deflecting an optical axis of the distance measuring light at a deflection angle and in a direction as required, a second optical axis deflecting unit disposed on a light receiving optical axis for deflecting the reflected distance measuring light at the same deflection angle and in the same direction as the first optical axis deflecting unit and a projecting direction detecting unit for detecting a deflection angle and a deflecting direction by the first optical axis deflecting unit, wherein the distance measuring light is projected through the first optical axis deflecting unit and the reflected distance measuring light is received by the photodetection element through the second optical axis deflecting unit.
H04N 13/25 - Image signal generators using stereoscopic image cameras using two or more image sensors with different characteristics other than in their location or field of view, e.g. having different resolutions or colour pickup characteristicsImage signal generators using stereoscopic image cameras using image signals from one sensor to control the characteristics of another sensor
09 - Scientific and electric apparatus and instruments
Goods & Services
computers; tablet computers; downloadable computer software for data capture, transmission, storage and indexing; downloadable cloud-computing software for data capture, transmission, storage and indexing; computer software for database management; computer peripheral devices; input devices for computers; document printers for computers; computer styluses; visual display units, namely, flat panel display screens; telecommunications hardware, namely, devices for transporting and aggregating voice, data, and video communications across multiple network infrastructures and communications protocols; computer hardware and peripheral devices for data communication
National University Corporation ASAHIKAWA MEDICAL UNIVERSITY (Japan)
KABUSHIKI KAISHA TOPCON (Japan)
Inventor
Yoshida, Akitoshi
Akiba, Masahiro
Abstract
A blood flow measurement apparatus of an embodiment includes an image acquisition unit, an image region specification unit, a measurement location setting unit, a scanner, and a blood flow information generation unit. The image acquisition unit acquires an image of a living body. The image region specification unit analyzes the image to specify a plurality of blood vessel regions. The measurement location setting unit sets a plurality of measurement locations that intersects with the plurality of blood vessel regions. The scanner scans a plurality of cross sections of the living body corresponding to the plurality of measurement locations using optical coherence tomography. The blood flow information generation unit generates blood flow information on the living body based on data acquired through the scan.
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
G01N 21/17 - Systems in which incident light is modified in accordance with the properties of the material investigated
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
09 - Scientific and electric apparatus and instruments
Goods & Services
Computer programs; electronic machines, apparatus and their
parts; measuring or testing machines and instruments;
telecommunication machines and apparatus; downloadable image
files; recorded video discs and video tapes; electrical
cells and batteries; electric or magnetic meters and
testers; fire alarms; gas leak alarms; burglar alarms.
11.
OCT angiography calculation with optimized signal processing
Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post-calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
An ophthalmological microscope system, having an illumination system that projects illumination light onto a subject's eye. A light receiving system guides returning light of the illumination light to an image sensor or an eyepiece system. An interference optical system splits light into measurement light and reference light and detects interference light generated from returning light of the measurement light and the reference light. A designation unit is used for designating an operation mode. When an observation priority mode (or an OCT priority mode) has been designated, a controller executes first light amount control that restricts light amount of the measurement light (or second light amount control that restricts light amount of the illumination light) to make total light amount of the illumination light and the measurement light equal to or less than a predetermined value.
An illumination system for projecting illumination light onto an eye. A left (right) light receiving system includes a left (right) objective lens and left (right) image sensor, and guides returning light of the illumination light to the left (right) image sensor via the left (right) objective lens. The objective optical axes of the left and right light receiving systems are disposed nonparallelly to each other. A projection system includes a projection system objective lens, and projects light onto the eye via the projection system objective lens. An optical scanner is used for scanning the eye with the light from the projection system. A deflection member is disposed near the objective optical axes, disposed in the optical path of the projection system between the optical scanner and the projection system objective lens, and deflects the optical path.
A61F 9/008 - Methods or devices for eye surgery using laser
A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
G02B 27/14 - Beam splitting or combining systems operating by reflection only
An illumination system of an ophthalmologic microscope system projects illumination light onto a patient's eye. A light receiving system guides returning light of the illumination light to an image sensor. A display controller controls a display device to display an image obtained by the image sensor. A magnification changing unit changes display magnification of the image. An interference optical system detects interference light generated from returning light of measurement light from the eye and reference light. An optical scanner is used to scan the eye with the measurement light. An OCT data generation unit processes a detection result of the interference light to generate data. A condition setting unit sets a projection condition of the measurement light in accordance with change in the display magnification. An OCT controller controls the interference optical system and/or the optical scanner based on the projection condition.
09 - Scientific and electric apparatus and instruments
Goods & Services
computer programs for operating surveying and scanning apparatus and instruments; computer programs for creation, design, visualization, simulation, analysis, collaboration, monitoring and storage of building, construction, infrastructure and environment data for use in building, engineering and infrastructure modeling; electronic machines used to apply holographic overlay and to set up and control holograms and verification thereof, and their structural parts; 3D scanners; surveying instruments; measuring instruments for temperature and humidity levels in gases and solid substances; laser measuring systems; lasers for measuring; distance measuring apparatus; downloadable image files containing three dimensional digital models of buildings, construction, infrastructure and environments; burglar alarms; electrical cells and batteries; fire alarms; gas leak alarms
17.
Ophthalmic examination support system, ophthalmic examination support server and ophthalmic examination support device
An ophthalmic examination support system of an embodiment includes a server and clients. The server includes a medical information storage apparatus that stores medical information on each patient, and a management apparatus that manages the medical information. Each of the clients can communicate with the management apparatus. The system includes an association information storage unit and an examination condition obtaining unit. The association information storage unit stores, in advance, association information in which association between predetermined medical information items and examination conditions of an ophthalmic examination is recorded. The examination condition obtaining unit receives medical information retrieved from the medical information storage apparatus by the management apparatus based on patient information transmitted from one of the clients, and obtains an examination condition corresponding to at least part of the received medical information from the association information. The client executes control based on the examination condition obtained.
An ophthalmologic imaging apparatus that includes a first optical system, a first driver, and a first focus controller. The first optical system includes a first focus lens and a diopter correction lens, and guides light from a subject's eye to a first light receiving element. The first focus lens is movable along the optical axis of a first optical path. The diopter correction lens is insertable into and removable from the first optical path. The first driver moves the first focus lens. The first focus controller executes mutually different focus control of the first driver in a removed state in which the first diopter correction lens is removed from the first optical path and in an inserted state in which the diopter correction lens is inserted into the first optical path.
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
An ophthalmic image display device having, a display controller that displays a B mode image, a blood vessel enhanced image representing a same cross section as the B mode image, and one or more front images individually formed based on a three dimensional data set acquired by performing optical coherence tomography on a subject's eye in a predetermined layout. Further, the display controller displays a cross section position indicator that indicates a position of a cross section of the B mode image over at least one of the one or more front images. In addition, the display controller synchronously performs changing of a display position of the cross section position indicator and updating of a display of each of the B mode image and the blood vessel enhanced image in accordance with an operation for moving the cross section position indicator performed using an operation unit.
An ophthalmic surgical apparatus includes an observation optical system, an illumination optical system, an interference optical system, and an image forming unit. The observation optical system is configured to observe an eye through an objective lens. The illumination optical system is configured to illuminate the eye through the objective lens. The interference optical system includes a reference optical path and a signal optical path which leads to the eye through the deflecting member located between the objective lens and the eye, and is configured to detect interference light based on light having passed through the signal optical path and returning from the eye and the reference light having passed through the reference optical path. The image forming unit forms an image of the eye based on a detection result obtained by the interference optical system.
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 27/14 - Beam splitting or combining systems operating by reflection only
In an ophthalmic operation microscope, an illumination optical system illuminates a patient's eye with illumination light. An observation optical system is used for observing the patient's eye illuminated. An objective lens is disposed in an observation optical path. An interference optical system splits light from a light source into measurement light and reference light, and detects interference light generated from returning light of the measurement light from the patient's eye and the reference light. A first lens group is disposed between the light source and the patient's eye in an optical path of the measurement light. A second lens group is disposed between the first lens group and the patient's eye in the optical path of the measurement light. A deflection member is disposed between the first lens group and the second lens group in the optical path of the measurement light.
09 - Scientific and electric apparatus and instruments
Goods & Services
Computer programs; electronic machines, apparatus and their
parts; measuring or testing machines and instruments;
telecommunication machines and apparatus; downloadable image
files; recorded video discs and video tapes; power
distribution or control machines and apparatus; rotary
converters; phase modifiers; electrical cells and batteries;
solar cells; electric or magnetic meters and testers; fire
alarms; gas leak alarms; burglar alarms.
A scanner of a blood flow measurement apparatus of an embodiment alternately performs first scan and second scan for first and second cross sections both intersecting an interested blood vessel. An image forming unit forms one or more images of the first cross section including a phase image of the first cross section and an image of the second cross section. A blood vessel region specification unit specifies a first blood vessel region in any of the one or more images of the first cross section and a second blood vessel region in the image of the second cross section. A gradient calculation unit calculates a gradient of the interested blood vessel at the first cross section based on the first and second blood vessel regions. A blood flow information generation unit generates blood flow information based on the phase image and the gradient.
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
01 - Chemical and biological materials for industrial, scientific and agricultural use
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
16 - Paper, cardboard and goods made from these materials
37 - Construction and mining; installation and repair services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Chemicals; anti-reflective coating agents for optical
components; coating agents for protecting paint surface of
optical components; solvents for optical components; surface
preparation agents for optical components; anti-fingerprint
coating agents; glue and adhesives not for office or
household use; higher fatty acids; unprocessed plastics in
all forms. Cleaning preparations for optical components not for use in
manufacturing. Construction machines and apparatus; loading-unloading
machines and apparatus; agricultural machines, agricultural
implements other than hand-operated; plastic processing
machines; semiconductor manufacturing machines and systems. Photographic apparatus and instruments; optical machines and
apparatus; measuring or testing machines and instruments;
batteries and cells; telecommunication machines and
apparatus; electronic machines, apparatus and their parts. Esthetic massage apparatus for commercial use; medical
machines and apparatus; electric massage apparatus for
household use; gloves for medical purposes; urinals for
medical purposes; bedpans; ear picks. Unmanned helicopters and drones [unmanned aerial vehicles]
for industrial purposes, and their parts and fittings;
aircraft and their parts and fittings. Paper and cardboard; printed matter. Repair or maintenance of painting or coating machines and
instruments; repair or maintenance of electronic machines
and apparatus; repair or maintenance of telecommunication
machines and apparatus; repair or maintenance of measuring
or testing machines and instruments; repair or maintenance
of medical machines and apparatus; repair or maintenance of
drones for industrial purposes; sterilization of medical
apparatus and instruments. Painting of components of optical machines and apparatus
including microscopes. Architectural design; surveying; provision of topographic
maps or data using computers. Provision of medical information; physical examination
services; rental of medical machines and apparatus.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
Goods & Services
Electronic machines; computers; tablet computers; computer
software; computer software for database management;
computer peripheral devices; input devices for computers;
document printers for computers; computer styluses; visual
display units; telecommunication machines and apparatus;
data communication apparatus and instruments. Medical apparatus and instruments; medical machines and
their parts; computer operated tonometers; vision testing
apparatus; ophthalmometers; slit lamps; retinal cameras;
medical apparatus and instruments using laser; laser
coagulator; binocular indirect ophthalmometers; multi coated
aspheric lens for medical purposes; automatic keratometers;
keratometers; refract keratometers for laser therapeutic
apparatus for ophthalmic purposes; eye testing apparatus;
observation instruments for corneal endothelium; vision
testing apparatus; auto chart projectors.
An ophthalmic imaging apparatus of an embodiment scans a subject's eye with OCT to acquire a cross sectional image. A measurement unit performs OCT. An imaging unit acquires a moving image of the subject's eye. A display controller controls a display device to display the moving image acquired by the imaging unit, and two or more scan pattern images corresponding to two or more scan lines representing scan positions and scan directions in the moving image and arranged such that at least two of the two or more scan pattern images intersect one another. An operation unit is used for changing a relative position between the two or more scan pattern images. A measurement controller controls the measurement unit to perform OCT based on the two or more scan lines corresponding to the two or more scan pattern images after the relative position have been changed.
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/14 - Arrangements specially adapted for eye photography
28.
Speckle reduction in optical coherence tomography images
AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH (Singapore)
KABUSHIKI KAISHA TOPCON (Japan)
Inventor
Cheng, Jun
Liu, Jiang
Wong, Wing Kee Damon
Akiba, Masahiro
Abstract
An optical coherence tomography (OCT) image composed of a plurality of A-scans of a structure is analyzed by defining, for each A-scan, a set of neighboring A-scans surrounding the A-slices scan. Following an optional de-noising step, the neighboring A-scans are aligned in the imaging direction, then a matrix X is formed from the aligned A-scans, and matrix completion is performed to obtain a reduced speckle noise image.
A reference signal having a known induced optical delay is used for phase stabilization of optical coherence tomography (OCT) interferograms, and for correcting sampling differences within OCT interferograms, in single mode and multimodal OCT systems. The reference signal can then be used to the measure time shift or sample clock period shifts induced in the interferogram signal by the OCT system. A corresponding OCT interferogram signal can then be corrected to remove the shift induced by the system based on the determination.
A fundus analysis apparatus includes a storage, an area setting unit, and a morphological information generating unit. The storage is configured to store OCT information acquired by applying optical coherence tomography to the fundus of an eye. The area setting unit is configured to set a front area corresponding to a front surface of the lamina cribrosa and a rear area corresponding to a rear surface of the lamina cribrosa in the OCT information. The morphological information generating unit is configured to generate morphological information indicating the morphology of the lamina cribrosa based on at least the front area and the rear area.
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A measurement and installation data indicating apparatus including a distance image sensor that obtains distance image data in a predetermined range, a projector that projects an image on a projection plane in a predetermined range, an inclination data obtaining part that obtains inclination data on a detection optical axis and a projection optical axis relative to a vertical direction, a positional data obtaining part that obtains coordinate data on a present position and a target position, and a terminal controller that generates, based on the coordinate data, a target information image related to the target position and seen from the present position. The terminal controller corrects the target information image to fit to a shape of the projection plane based on the distance image data and the inclination data, and projects the corrected target information image by the projector.
A technology for achieving a reduction in size of an ophthalmic apparatus capable of performing a plurality of kinds of measurements performed before cataract surgery is provided. An ophthalmic apparatus is described that includes a refractive power measurement unit and an eyeball information measurement unit. The refractive power measurement unit is configured to project light from a light source onto a subject's eye and detect returning light thereof to determine refractive power of an ocular optical system of the subject's eye. The eyeball information measurement unit is configured to project light from the same light source onto the subject's eye and detect returning light thereof to determine eyeball information representing structure of the subject's eye.
A61B 3/103 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
A61B 3/036 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters for testing astigmatism
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/06 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptationSubjective types, i.e. testing apparatus requiring the active assistance of the patient for testing colour vision
33.
Methods and apparatus for phase stabilized swept-source optical coherence tomography (SS-OCT) including rescaling and dynamic range enhancement
An optical coherence tomography (OCT) system electrically mixes a signature signal with an OCT signal (e.g., an interferogram) output by a photodetector of the OCT system. The signature signal may be a signal output by a photodetector that detects an optical signal from a fiber Bragg grating. The signature signal may then be time delayed before combination with the OCT signal. A series of interferograms are then aligned according to the signature signal. A rescaling signal may be similarly electrically mixed with the signature and OCT signals.
An ophthalmic apparatus capable of selectively performing a first imaging mode in which imaging of a subject's eye is performed in a first state where an attachment unit is not attached, and a second imaging mode in which imaging of the subject's eye is performed in a second state where the attachment unit is attached. The ophthalmic apparatus includes: an operation unit; an attachment state determination unit to determine whether or not the attachment unit is attached; a correspondence determination unit to determine whether or not the correspondence between the imaging mode designated by a use of the operation unit and an attachment state of the attachment unit obtained by the attachment state determination unit is appropriate; and a controller to perform control for prohibiting imaging in at least the designated imaging mode when the correspondence determination unit has determined that the correspondence is not appropriate.
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/117 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/18 - Arrangement of plural eye-testing or -examining apparatus
35.
Ophthalmologic imaging apparatus and method for controlling the same
An ophthalmologic imaging apparatus includes a data acquisition unit and a controller. The data acquisition unit is configured to repeatedly acquire data by repeatedly scanning an eye using optical coherence tomography. The controller is configured to perform first control to adjust optical path length difference between a sample arm and a reference arm of an interference optical system for optical coherence tomography to place an image of the eye in a reference position in an image frame based on the data repeatedly acquired by the data acquisition unit. Further, the controller is configured to perform second control to change the optical path length difference so as to place the image of the eye in a new reference position in the image frame based on the data repeatedly acquired by the data acquisition unit. The apparatus can perform preparatory operations for OCT measurement of the subject's eye.
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/15 - Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection
36.
Visual function testing device and visual function testing system
The objects of an embodiment are to improve the reliability of visual function examination and to shorten the time required for the examination. A visual function examination apparatus of an embodiment includes an application optical system, a biological information detector, and an evaluation information generator. The application optical system includes an optical scanner disposed in an optical path of laser light output from a laser light source, and is configured to apply the laser light that has travelled via the optical scanner to a retina of a subject's eye. The biological information detector is configured to detect biological information representing a reaction of a subject to application of the laser light. The evaluation information generator is configured to generate evaluation information on visual function of the subject's eye based on the biological information detected.
A61B 3/08 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing binocular or stereoscopic vision, e.g. strabismus
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
A61B 3/18 - Arrangement of plural eye-testing or -examining apparatus
37.
Ophthalmic information system and ophthalmic information processing server
An ophthalmic information system for long-term management of pathological conditions, in which, upon receipt of patient identification information and examination data from an ophthalmic examination apparatus, a server of the system specifies a medical institution terminal corresponding to the patient identification information, and sends the patient identification information and the examination data received to the medical institution terminal specified. Further, upon receipt of the patient identification information and a report based on the examination data from the medical institution terminal, the server stores at least part of the report in a patient information storage area associated with the patient identification information, and sends at least part of the report to a patient terminal corresponding to the patient identification information.
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
G16H 80/00 - ICT specially adapted for facilitating communication between medical practitioners or patients, e.g. for collaborative diagnosis, therapy or health monitoring
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/18 - Arrangement of plural eye-testing or -examining apparatus
G06Q 50/24 - Patient record management (processing of medical or biological data for scientific purposes G06F 19/00)
The system includes a survey machine having an image-taking section, a section of measuring a distance to a target and a section of measuring an angle, a pointing rod which is positioned on the measurement point X and includes, at a position deviated from a fixed length L from the measurement point, the prism, and an inclination sheet having a mark. The three-dimensional position of the measurement point is measured by equipping the inclination sheet to the pointing rod, imaging a mark surface in the image-taking section, calculating the inclination angle of the inclination sheet with respect to the eye direction from the survey machine by image-analyzing the mark surface, and determining the three-dimensional position of the measurement point from a three-dimensional position of the prism, the inclination angle of the inclination sheet and the fixed length.
AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH (Singapore)
KABUSHIKI KAISHA TOPCON (Japan)
Inventor
Cheng, Jun
Liu, Jiang
Duan, Lixin
Xu, Yanwu
Wong, Wing Kee Damon
Akiba, Masahiro
Abstract
A method and system are proposed to obtain a reduced speckle noise image of a subject from optical coherence tomography (OCT) image data of the subject. The cross sectional images each comprise a plurality of scan lines obtained by measuring the time delay of light reflected, in a depth direction, from optical interfaces within the subject. The method comprises two aligning steps. First the cross sectional images are aligned, then image patches of the aligned cross sectional images are aligned to form a set of aligned patches. An image matrix is then formed from the aligned patches; and matrix completion is applied to the image matrix to obtain a reduced speckle noise image of the subject.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
Goods & Services
Computers; tablet computers; computer software for use in tracking and collecting information about eye properties, for use in retinal imaging; computer software for database management; computer peripheral devices; input devices for computers; document printers for computers; computer styluses; visual display units being flat panel display screens, flat panel displays for computers; telecommunication machines and apparatus, namely microphones, telephones, telecommunication transmitters; data communication apparatus and instruments, namely electric data processing apparatus Computer operated tonometers; vision testing apparatus being phoropters; ophthalmometers; slit lamps; retinal cameras; medical apparatus and instruments using laser, namely lasers for medical use; laser coagulator; binocular indirect ophthalmometers; multi coated aspheric lens for medical purposes; automatic keratometers; keratometers; refract keratometers for laser therapeutic apparatus for ophthalmic purposes; eye testing machines and apparatus; observation instruments, namely corneal topographers for corneal endothelium; auto eye charts projectors for medical examination use
Provided is a slit lamp microscope capable of controlling irradiation of slit light and background illumination light interlockingly. Embodiment includes a main illumination system, background illumination system, observation system and controller. The main illumination system includes a first light source unit that outputs first light and slit forming unit that forms a slit with changeable width, and illuminates an eye with the first light having passed through the slit. The background illumination system includes a second light source unit that outputs second light, and illuminates a peripheral area of an eye area irradiated with the first light. The observation system includes an eyepiece lens, imaging device, and group of optical elements that guides reflected light of the first light and reflected light of the second light from the eye to the eyepiece lens and imaging device. The controller interlockingly controls the main illumination system and second light source unit.
01 - Chemical and biological materials for industrial, scientific and agricultural use
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
16 - Paper, cardboard and goods made from these materials
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Industrial chemicals; anti-reflective coating agents for optical components; coating agents for protecting paint surface of optical components; solvents for optical components; chemical surface preparation agents for optical components; chemical anti-fingerprint coating agents; glue and adhesives not for office or household use for industrial purposes; higher fatty acids for use in the manufacture of metal; unprocessed plastics in all forms Cleaning preparations for optical components not for use in manufacturing Loading-unloading machines and apparatus; plastic processing machines; semiconductor wafer processing machines Photographic apparatus and instruments, namely, cameras; optical machines and apparatus, namely, optical surveying instruments; measuring or testing machines and instruments, namely, surveying instruments in the nature of total stations, theodolites, level measuring machines; batteries and electrical cells; telecommunication machines and apparatus, namely, global positioning system (GPS) consisting of computers, computer software, transmitters, receivers, and network interface devices, GIS receivers, 3D coordinate measuring system, sold as a unit; electronic machines, apparatus and their parts, namely, GPS/GNSS surveying systems comprised of transmitter, receiver, reference station, power supply, wired and wireless communications link, cabling, computer hardware and computer software for automatic determination of indoor and outdoor geographic position of instruments for surveying and of electronic positioning instruments for navigation, guidance, orientation, operation and control of moveable objects, GIS receivers, 3D coordinate measuring system comprised of LCD touch-screen display, gyroscope, power supplies, telescope, laser, motor drive, laser pointer and guide light, construction laser equipment for non-medical purposes, precision laser interferometers Medical machines and apparatus, namely, tonometers, retinal cameras, operation microscopes, slit lamps, laser operation apparatus, keratometers, ophalmometer perimeters, medical desks, instrument tables, vision testers, chart projectors, panel charts, refractometers, lensmeters, PD meters, trial lens sets, opthalmic examination stands and chairs, lens edging machines, point setters, frame videos, and screenoscopes, surgical apparatus and instruments for use in ophthalmic surgery; electric massage apparatus for household use; gloves for medical purposes; urinals for medical purposes; bedpans; ear picks Unmanned helicopters and drones, unmanned aerial vehicles for industrial purposes, and their structural parts and structural fittings; aircraft and their structural parts and fittings Paper and cardboard; printed matter, namely, advertising and promotional material, in the nature of booklets, printed manuals and user guides, all in the fields of medical technology and measuring and test equipment Repair or maintenance of painting or coating machines and instruments; repair or maintenance of electronic machines and apparatus; repair or maintenance of telecommunication machines and apparatus; repair or maintenance of measuring or testing machines and instruments; repair or maintenance of medical machines and apparatus; repair or maintenance of drones for industrial purposes; sterilization of medical apparatus and instruments Architectural design; surveying; provision of topographic maps or data using computers Provision of medical information; physical examination services; rental of medical machines and apparatus
To evaluate the accommodation function of an eye in detail, an accommodation function evaluation apparatus includes an accommodative stimulus applying unit, a measurement unit, and an analyzer. The accommodative stimulus applying unit is configured to apply an accommodative stimulus to the eye. The measurement unit is configured to perform optical coherence tomography for a target site in the eye including at least part of the crystalline lens. The analyzer is configured to analyze data obtained by the optical coherence tomography of the eye, to which the accommodative stimulus is being applied, to generate evaluation information related to the accommodation function of the eye.
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/09 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing accommodation
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/117 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
Optical coherence tomography (OCT) scan data of a subject is acquired over a region of interest which can include an optic disc or a macula of a retina. Layer boundaries of retinal layers are identified in the OCT scan data to facilitate measurements. In one aspect, a measurement related to ratio value between a total backscattered signal intensity of one or more target layers of the retina and a total backscattered signal intensity of one or more reference layers is computed on a location-by-location basis within a region of interest of the OCT scan data. Measurements can be collected, aggregated, analyzed, and displayed in connection with other information taken or derived from the OCT scan data.
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
Geographic atrophy of the eye can be detected and measured by imaging the eye at a depth greater than the retinal pigment epithelium (RPE) at a plurality of locations of the eye, for example, using optical coherence tomography (OCT); determining a ratio of the intensities of imaging signals of a retinal layer(s) with respect to the intensity of imaging signals of a sub-RPE layer(s) at each location; determining representative values based at least in part on the determined ratios; generating a map of the representative values; and identifying diseased areas from the map. Contours and binary maps may be generated based on the identified diseased areas. The size and shape of the identified areas may be analyzed and monitored over a period of time.
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A carrying case has a flat top surface and bottom surface aligned in a first direction (Z direction) and includes two top surface rib grooves, extending in a second direction (X direction) perpendicular to the first direction and recessed in the first direction, on the top surface and four interfering projections, projecting in the first direction, on the bottom surface. Both ends of one of the top surface side rib grooves seen from the second direction are inclined toward one side in a third direction (Y direction) perpendicular to the second direction and both ends of the other top surface side rib groove seen from the second direction are inclined toward the other side in the third direction. The respective interfering projections are disposed corresponding to the respective inclining portions such that the interfering projections touch the inclining portions from inside.
An ophthalmic surgical apparatus includes an observation optical system, an illumination optical system, an interference optical system, and an image forming unit. The observation optical system is configured to observe an eye through an objective lens. The illumination optical system is configured to illuminate the eye through the objective lens. The interference optical system includes a reference optical path and a signal optical path which leads to the eye through the deflecting member located between the objective lens and the eye, and is configured to detect interference light based on light having passed through the signal optical path and returning from the eye and the reference light having passed through the reference optical path. The image forming unit forms an image of the eye based on a detection result obtained by the interference optical system.
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/15 - Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection
G02B 15/14 - Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B 27/14 - Beam splitting or combining systems operating by reflection only
A fundus imaging apparatus includes a scanning optical system, a control circuit, and an image forming unit. The scanning optical system scans a fundus of a subject's eye with light from a light source, and receives return light from the fundus by a light receiver. The control circuit controls the scanning optical system such that a scanning locus is formed by the light in the fundus. The image forming unit forms an image of the fundus based on a light receiving signal from the light receiver and a position of the scanning locus. The control circuit is capable of performing an alignment mode, in which the control circuit controls the scanning optical system to project an alignment indicator for aligning the scanning optical system with the subject's eye on the fundus based on the light from the light source.
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/15 - Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection
An embodiment provides an optical image measuring apparatus capable of acquiring images with high lateral resolution and global sharpness. An optical image measuring apparatus of an embodiment includes an optical system, image forming part, controller and composite-cross-sectional-image forming part. The optical system includes a scanner that changes an irradiation position of signal light on an object and a focus position changing part that changes a focus position of the signal light. The optical system detects interference light of returned light of the respective signal light from the object and reference light. The image forming part forms a cross-sectional image based on detection results of a plurality of interference light corresponding to a plurality of irradiation positions of the signal light. The controller controls the optical system to irradiate the signal light onto the plurality of irradiation positions repeatedly while changing the focus position. The composite-cross-sectional-image forming part forms one composite cross-sectional image based on two or more cross-sectional images formed by the image forming part on the basis of results of repetitive irradiation of the signal light.
G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/15 - Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
G06T 11/60 - Editing figures and textCombining figures or text
A wide area sensor system includes an unmanned airplane being switchable between an airplane mode for high speed flight and a VTOL mode for low speed flight, a state detection sensor provided in the unmanned airplane, the state detection sensor being driven to detect a state of a detection target, and an external control apparatus that controls flight of the unmanned airplane and driving of the state detection sensor. The external control apparatus performs high speed sensing by driving the state detection sensor while performing the high speed flight of the unmanned airplane in the airplane mode. The control apparatus performs low speed sensing by driving the state detection sensor while performing the low speed flight of the unmanned airplane in the VTOL mode.
G05D 1/10 - Simultaneous control of position or course in three dimensions
B64C 13/20 - Initiating means actuated automatically, e.g. responsive to gust detectors using radiated signals
B64C 29/00 - Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
B64C 39/02 - Aircraft not otherwise provided for characterised by special use
B64C 19/00 - Aircraft control not otherwise provided for
B64C 27/30 - Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft with provision for reducing drag of inoperative rotor
B64C 27/26 - Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft characterised by provision of fixed wings
G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
The present invention automatically acquires a focused OCT image while an eye under examination is being observed. The ophthalmological microscope system according to the embodiments includes an illumination system, a pair of light-receiving systems, an interference optical system, a movement mechanism, a control unit, and a data-processing unit. The illumination system emits illumination light at an eye under examination. The pair of light-receiving systems include respective objective lenses and imaging elements, are arranged such that the objective optical axes thereof are not parallel to each other, and, via the respective objective lenses thereof, guide return light that is from illumination light that has been emitted at the eye under examination to the respective imaging elements thereof. The interference optical system includes a focus lens and an OCT objective lens, separates light that is from an OCT light source into measurement light and reference light, and detects, via the focus lens and the OCT objective lens, interference light between the reference light and return light that is from measurement light that has been emitted at the eye under examination from a direction that is different from the objective optical axis. The movement mechanism moves the focus lens. The control unit controls the movement mechanism. The data-processing unit generates analysis results or an image of the eye under examination on the basis of the detection results for the interference light.
Provided is an ophthalmological microscope that can, by means of a simple configuration, achieve selective presentation, clear observational images, and clear photographic images. The ophthalmological microscope according to the embodiments is provided with an illumination system, a light-receiving system, an ocular system, a processing unit, and a display control unit. The illumination system emits illumination light at a patient's eye. The light-receiving system guides return light that is illumination light from the patient's eye to an imaging element. The ocular system includes a display unit and an ocular lens that is arranged on a display-surface side of the display unit. The processing unit processes output from the imaging element. The display control unit executes first display control that causes an observational image that is a moving image based on repetitive output from the imaging element to be displayed on the display unit and second display control that causes a processed image that has been generated by the processing unit to be displayed on the display unit.
In the present invention, light from an irradiating system is made to enter the eye being examined from a direction as perpendicular to the eye as is possible. The opthalmologic microscope system according to one embodiment comprises an illuminating system, a left light-receiving system, a right light-receiving system, an irradiating system, an optical scanner, and a deflecting member. The illuminating system irradiates the eye being examined with illuminating light. The left light-receiving system draws returning illuminating light irradiated onto the eye being examined, via a left objective lens, to a left imaging element. The right light-receiving system is positioned in such a manner that the objective optical axis thereof is not parallel with the objective optical axis of the left light-receiving system, and draws returning illuminating light irradiated onto the eye being examined, via a right objective lens, to a right imaging element. The irradiating system irradiates the eye being examined with light distinct from the illuminating light, via an irradiating system objective lens. The optical scanner is used to scan the eye being examined with light from the irradiating system. The deflecting member is positioned in the proximity of the objective optical axis of each of the left light-receiving system and the right light-receiving system, and on the optical path of the irradiating system between the optical scanner and the irradiating system objective lens, and deflects the optical path.
A site management system includes an unmanned airplane being switchable between an airplane mode for high speed flight and a VTOL mode for low speed flight, a working vehicle working in a civil construction site, a shape detection sensor provided in the unmanned airplane to detect a shape of the civil construction site, and an external control apparatus that controls flight of the unmanned airplane, driving of the working vehicle, and driving of the shape detection sensor. The external control apparatus moves the unmanned airplane to an observation area by performing the high speed flight. Further, the external control apparatus detects a shape of the observation area by driving the shape detection sensor while performing the high speed flight or by driving the shape detection sensor while performing low speed flight by switching from the airplane mode to the VTOL mode.
B64C 29/02 - Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis vertical when grounded
B64C 29/00 - Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
B64C 39/02 - Aircraft not otherwise provided for characterised by special use
The purpose of the present invention is to prevent an opthalmologic microscope from becoming too large, even in cases in which other opthalmologic devices are used in combination with the opthalmologic micrscope. The opthalmologic microscope system according to one embodiment comprises a pair of illuminating systems, a pair of light-receiving systems, a front eye part-illuminating system and an irradiating system. The pair of illuminating systems are able to irradiate the fundus of the eye being examined with illuminating light. The pair of light-receiving systems are provided respectively and coaxially to each of a pair of illuminating systems, and each contain a first objective lens and a first imaging element. The pair of systems are positioned in such a manner that the objective optical axes thereof are not parallel, and the returning illumination light irradiated on the eye being examined is drawn to the first imaging element of each system after passing through the first objective lens of each system. The front eye part illuminating system is positioned non-coaxially with respect to the objective optical axes of the pair of light receiving systems, and illuminates the front part of the eye being examined. The irradiating system is positioned coaxially with respect to the front eye part illuminating system, and irradiates the eye being examined with light that is different from the illuminating light.
Provided is a novel technology that can improve the image quality of observational images and OCT images while providing protection from light hazards, even when an OCT device has been combined with an ophthalmological microscope. The ophthalmological microscope system according to the embodiments includes an illumination system, a light-receiving system, an interference optical system, a designation unit, and a control unit. The illumination system emits illumination light at an eye under examination. The light-receiving system guides return light that is from illumination light that has been emitted at the eye under examination to an imaging element or to an ocular lens. The interference optical system separates light from an OCT light source into measurement light and reference light and detects interference light between the reference light and return light that is from measurement light that has been emitted at the eye under examination. The designation unit is used for designating operation modes. When an observation-prioritizing mode has been designated, the control unit performs first light-amount control that limits the amount of measurement light such that the combined amount of illumination light and measurement light is at or below a predetermined value. When an OCT-prioritizing mode has been designated, the control unit performs second light-amount control that limits the amount of illumination light such that the combined amount of light is at or below a predetermined value.
In the present invention, a digital zoom for microscope observation and an OCT scan are connected to one another. The illuminating system of the opthalmologic microscope system of one embodiment irradiates the patient's eye with illuminating light. The light-receiving system draws returning illuminating light from the patient's eye to an imaging element. A display control unit displays on a display means an image based on the output of the imaging element. A magnification changer changes the display magnification of an image by processing the output of the imaging element. An interference optical system separates light from an OCT light source into measurement light and reference light, and detects the interference light between the reference light and the returned light of the measurement light from the patient's eye. An optical scanner is used to scan the patient's eye by means of the measurement light. An OCT Data generator processes the detection results of interference light and generates data. The condition setting unit sets irradiating conditions for measurement light according to variations in the display magnification made by the magnification changer. The OCT control unit controls the interference light system and/or optical scanner on the basis of the irradiation conditions that have been set.
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
According to one embodiment, an ophthalmic examination apparatus includes an examination unit and an analyzer. The examination unit is used to optically examine a subject's eye. The analyzer is configured to analyze examination data obtained by the examination unit, and thereby generate risk information indicating the risk of a specific disease.
According to one embodiment, an ophthalmic examination system includes a plurality of ophthalmic examination apparatuses and a management apparatus that manages the operational status of the ophthalmic examination apparatuses. The ophthalmic examination system includes a receiver, a counting unit, a storage device, and a storage controller. The receiver receives first identification information for identifying a subject. The counting unit includes a counter provided for each apparatus group including at least one ophthalmic examination apparatus, and counts the number of times of use of the apparatus group in units of the first identification information of the subject examined with the ophthalmic examination apparatus included in the apparatus group. The storage controller acquires a counter value indicated by the counter from the counting unit, associates the counter value with second identification information for identifying the apparatus group, and stores them in the storage device.
A calibration method for improving distortion of a waveform of a point-spread-function without constantly executing feedback control to a wavelength-swept light source is provided. An interference signal is generated by varying voltage to be applied to a light source within one period, the interference signal is sampled at equal time intervals on a time axis, the point-spread-function is obtained through Fourier transform by multiplying by a first window function, and a complex analysis signal including frequency information of light is obtained through inverse Fourier transform by multiplying the point-spread-function by a second window function. After a variation in a frequency of the light relative to a time within one period is obtained at equal time intervals by unwrapping phase information of the complex analysis signal, a correspondence relationship between the variation in the frequency of the light within one period and a variation in voltage within one period is obtained.
Distribution information of examination results of eye fundus is displayed. An imaging part carries out movie imaging of fundus. A tomographic image forming part comprises an optical system that generates and detects interference light by superposing signal light from fundus on reference light and a scanner that scans fundus with signal light, and forms tomographic image of fundus based on detection results of interference light acquired by the scanning. A setting part sets scan-target location of signal light on distribution information. A specifying part specifies image region in fundus image obtained by the movie imaging that corresponds to the scan-target location. A controller controls the scanner based on the specified image region to carry out scanning of signal light. The tomographic image forming part forms tomographic image from the detection results of interference light acquired by the scanning of signal light based on the control.
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
An ophthalmologic apparatus which is capable of preferably executing position matching between an eye and optical system is provided. An ophthalmologic apparatus of an embodiment includes an examination optical system, supporting part, driver, two or more imaging parts, analyzer and controller. The examination optical system is used for an examination of the eye. The supporting part supports a face of a subject. The driver moves the examination optical system and the supporting part relatively and three-dimensionally. The two or more imaging parts substantially simultaneously photograph an anterior eye part of the eye from different directions. The analyzer obtains a three-dimensional position of the eye by analyzing two or more photograph images acquired by the two or more imaging parts substantially simultaneously. The controller controls the driver based on the three-dimensional position to relatively move the examination optical system and the supporting part.
Provided is an ophthalmologic imaging apparatus capable of automatically focusing and imaging an eye to be tested even when a diopter correction lens is inserted in the optical path. The ophthalmologic imaging apparatus according to an embodiment includes a first optical system, a first drive unit, and a first focusing control unit. The first optical system is provided with a first focusing lens and a diopter correction lens, and guides light from the eye to be tested toward a first light receiving element. The first focusing lens can be moved along the optical axis of a first optical path. The diopter correction lens can be inserted in or removed from the first optical path. The first drive unit moves the first focusing lens. The first focusing control unit executes, on the first drive unit, a focusing control that is different between a withdrawn state in which the diopter correction lens is withdrawn from the first optical path and an inserted state in which the diopter correction lens is inserted in the first optical path.
In order to more widely provide an early detection method of and preventive treatment for ophthalmologic disease, this ophthalmic examination support system is provided with a server and with multiple clients. The server has a medical information storage device which stores patients' medical information, and a management device which manages the medical information stored therein. The clients are capable of communicating with the management device. The system is provided with an association information storage unit and an examination condition acquisition unit. The association information storage unit pre-stores association information which associates prescribed items of medical information and examination conditions for ophthalmic examination. The examination condition acquisition unit receives medical information found by the management device searching the medical information storage device on the basis of patient information transmitted from any of the clients, and, from the association information, acquires examination conditions corresponding to at least part of said medical information. The clients perform control on the basis of the acquired examination conditions.
In order to more widely provide a high-quality early detection method of and preventive treatment for ophthalmologic disease, a server in this ophthalmic examination support system has a medical information storage device for storing patients' medical information, and a management device for managing the same. Multiple clients are capable of communicating with the management device. An association information storage unit pre-stores association information which associates prescribed items of medical information and examination conditions for ophthalmic examination. From the association information, the examination condition acquisition unit acquires examination conditions associated with medical information corresponding to patient information transmitted from a client. A control unit of the clients performs control on the basis of the acquired examination conditions. A control unit of the management device receives medical information including the examination data about the patient's eyes transmitted together with the patient information from the client and stores this information in the medical information storage device. A first update unit of the management device statistically processes the medical information in the medical information storage device and updates the association information.
An ophthalmology apparatus includes an apparatus body on which a first measurer and a second measurer are provided and which is movable relative to a base by a driver, a forehead support provided on the base, and a controller. The controller detects a first front position setting a distance between the second measurer and the forehead support as a first interval and a second front position setting a distance between the second measurer and the forehead support as a second interval larger than the first interval, and emits a warning when the apparatus body reaches the second front position in moving the apparatus body to a forehead support side and stops movement of the apparatus body to the forehead support side when the apparatus body reaches the first front position.
A61B 3/15 - Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/16 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for measuring intraocular pressure, e.g. tonometers
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
National University Corporation ASAHIKAWA MEDICAL UNIVERSITY (Japan)
Inventor
Yoshida, Akitoshi
Akiba, Masahiro
Fukuma, Yasufumi
Tokoro, Hideaki
Aimi, Taiki
Nakamura, Shunsuke
Abstract
In an embodiment, cross sectional image storage stores a cross sectional image group including multiple cross sectional images each of which is associated with time. Phase image storage stores a phase image group including multiple phase images each of which is associated with time. Blood flow information storage stores a blood flow information group including multiple blood flow information each of which is related to blood flow in a blood vessel of the living body and is associated with time. Display synchronously displays a cross sectional image included in the cross sectional image group and a phase image included in the phase image group using time associated with the cross sectional image and the phase image, and displays a blood flow image that expresses multiple blood flow information. The display performs the same change as the change to the cross sectional image, the phase image and the blood flow image.
A61B 5/05 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
G06T 11/60 - Editing figures and textCombining figures or text
A61B 5/0285 - Measuring phase velocity of blood waves
Provided is an ophthalmic surgical microscope in which a drive system for moving optical members can be positioned with a high degree of freedom, and with which a patient's eye can be observed and OCT images can be captured. An ophthalmic surgical microscope according to an embodiment includes an illumination optical system, an observation optical system, an interference optical system, an optical scanner, a collimator lens, an optical fiber, and a movement mechanism. The illumination optical system illuminates the patient's eye using illumination light. The observation optical system is used in order to observe the patient's eye that is illuminated by the illumination optical system. The interference optical system separates light from a light source into measurement light and reference light, and detects the interference light between the reference light and the returned light of the measurement light from the patient's eye. The optical scanner is disposed on the optical path of the measurement light. The collimator lens is disposed between the light source and the optical scanner. The exit end of the measurement light from the optical fiber is disposed at a position facing the collimator lens. The movement mechanism moves the collimator lens and the exit end relative to one another along the optical path of the measurement light.
Provided is an ophthalmic surgical microscope which maintains the working space between an objective lens and a patient's eye, and with which a patient's eye can be observed and OCT images can be captured. An ophthalmic surgical microscope according to an embodiment includes an objective lens, an illumination optical system, an observation optical system, an interference optical system, a first lens group, a second lens group and a polarization member. The illumination optical system illuminates the patient's eye using illumination light via the objective lens. The observation optical system is used in order to observe, via the objective lens, the patient's eye that is illuminated by the illumination optical system. The interference optical system separates light from a light source into measurement light and reference light, and detects the interference light between the reference light and the returned light of the measurement light from the patient's eye. On the path of the measurement light towards the patient's eye, the first lens group is disposed on the upstream side, and the second lens group is disposed downstream of the first lens group. The polarization member is disposed upstream of the objective lens on the path of the return light of the illumination light, and is disposed between the first lens group and the second lens group.
Provided is a technique that makes it possible to reduce the size of an ophthalmic surgical microscope for viewing a patient’s eye and acquiring an OCT image. An ophthalmic surgical microscope according to an embodiment of the present invention includes an illuminating optical system, a viewing optical system, an objective lens, an interference optical system, a first lens group, a second lens group, and a deflecting member. The illuminating optical system illuminates a patient’s eye by illumination light. The viewing optical system is used for viewing a patient’s eye illuminated by the illuminating optical system. The objective lens is disposed in a viewing optical path. The interference optical system divides light from a light source into measurement light and reference light, and detects interference light of the reference light and light returning from the measurement light from the patient’s eye. The first lens group is disposed in the optical path of the measurement light between the light source and the patient’s eye. The second lens group is disposed in the optical path of the measurement light between the first lens group and the patient’s eye. The deflecting member is disposed in the optical path of the measurement light between the first lens group and the second lens group.
National University Corporation ASAHIKAWA MEDICAL UNIVERITY (Japan)
Inventor
Yoshida, Akitoshi
Akiba, Masahiro
Fukuma, Yasufumi
Tokoro, Hideaki
Aimi, Taiki
Nakamura, Shunsuke
Abstract
In an embodiment, cross sectional image storage stores a cross sectional image group including multiple cross sectional images each of which is associated with time. Phase image storage stores a phase image group including multiple phase images each of which is associated with time. Blood flow information storage stores a blood flow information group including multiple blood flow information each of which is related to blood flow in a blood vessel of the living body and is associated with time. Display synchronously displays a cross sectional image included in the cross sectional image group and a phase image included in the phase image group using time associated with the cross sectional image and the phase image, and displays a blood flow image. The display performs the same change as the change to the change operation to the cross sectional image, the phase image and the blood flow image.
A61B 5/05 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
G06T 11/60 - Editing figures and textCombining figures or text
A61B 5/0285 - Measuring phase velocity of blood waves
The purpose of the present invention is to make ophthalmic image diagnosis smoother and faster. According to an embodiment, an ophthalmic image display device is provided with: a display control unit, which displays information on a display means; and an operation unit. The display control unit displays, in a predetermined layout, images composed on the basis of a 3-D data set collected via optical coherence tomography of a subject's eye, said images being a B-mode image, a blood vessel emphasized image that shows the same cross section as said B-mode image, and one or more en face images. The display control unit also displays a cross section position marker, which indicates the position of the cross section of the B-mode image, overlaid on at least one of the one or more en face images. Additionally, in response to an operation performed via the operation unit to move the cross section position marker, the display control unit changes the displayed position of the cross section position marker, while simultaneously updating the displayed B-mode image and the displayed blood vessel emphasized image.
The invention provides an automatic leveling device comprising; one tilt sensor provided on a leveling base plate, a leveling mechanism unit capable of tilting the leveling base plate in at least two directions and a control device for controlling the leveling mechanism unit and for tilting the leveling base plate, wherein the control device is configured to tilt the leveling base plate so that the tilting of the leveling base plate follows a searching route as set in a process of a leveling from a condition where a tilt detecting signal from the tilt sensor is not obtained, carries out an auxiliary leveling to obtain signals from the tilt sensor in a process of changing the tilting, and carries out a main leveling by controlling the leveling mechanism unit based on the detection result from the tilt sensor where a tilt detecting signal is obtained from the auxiliary leveling.
According to one embodiment, an ophthalmic microscope system includes an illumination system, a pair of light-receiving systems, and an irradiation system. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The irradiation system is configured to irradiate the subject's eye with light different from the illumination light from a direction different from the objective optical axes.
According to one embodiment, an ophthalmic microscope includes an illumination system, a pair of light-receiving systems, and a first mechanism. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide return light of the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The first mechanism is configured to move the light-receiving systems relative to each other to change an angle formed by the objective optical axes of the light-receiving systems.
Provided is a novel technique for assisting an ocular function. The ocular function assistance device according to an embodiment comprises an actuator, a controller, and an information input unit. The ocular function assistance device assists an ocular function. The actuator is used to provide a predetermined ocular function upon receiving power and operating. The controller controls at least power supply to the actuator. The information input unit inputs biological information or environmental information to the controller. The controller changes control modes for the actuator on the basis of the biological information or the environmental information.
The invention provides an electro-optical distance meter, which comprises a light emitting element for emitting a distance measuring light, signal generators for generating two or more proximity frequencies, intermittent pulse generators for generating a modulation signal in which the two or more proximity frequencies are intermitted respectively and converted to pulses with a predetermined width, a projecting optical system for sequentially switching over and projecting intermittent modulated distance measuring light as converted to pulses with predetermined width by the modulation signal, a photodetection unit for receiving a reflected distance measuring light from an object to be measured and producing an intermittent photodetection signal with a predetermined pulse width, other signal generators for generating frequency signals having a difference of a predetermined frequency with respect to the proximity frequency respectively, a frequency converting unit for performing frequency conversion by mixing the intermittent photodetection signals from the photodetection unit to a difference frequency and the frequency signals and for obtaining a signal column of intermittent conversion signals having a predetermined pulse width corresponding to each difference frequency respectively and changing by corresponding to each difference frequency respectively, and an arithmetic control unit, wherein the arithmetic control unit is configured so as to intermit the proximity frequencies so that the pulse width of the intermittent modulated distance measuring light will be shorter than a period of the difference frequency, to calculate difference frequency waveforms with respect to each of the intermittent conversion signals respectively, to calculate a precise measurement distance value by obtaining a phase from a waveform of at least one cycle of the difference frequency, to calculate a coarse measurement distance value by obtaining a phase difference between the relative difference frequencies and to determine a distance by combining the coarse measurement distance value and the precise measurement distance value.
G01S 17/32 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
G01S 17/10 - Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
G01S 17/36 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
The invention relates to an electro-optical distance meter, which projects a modulated measuring light to an object to be measured, receives a reflected measuring light from the object to be measured and measures a distance to the object to be measured by a phase difference between the measuring light and the reflected light. With the electro-optical distance meter, it is possible to efficiently prepare signals required for measurement and to perform measurement within a short time.
G01S 17/10 - Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
G01S 17/36 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
The invention provides a surveying instrument, which comprises a light emitting element for emitting a distance measuring light, a distance measuring light projecting unit for projecting the distance measuring light, a light receiving unit for receiving a reflected distance measuring light, a photodetection element for receiving the reflected distance measuring light and for producing a photodetection signal and a distance measuring unit for performing a distance measurement based on a light receiving result from the photodetection element, further comprises a first optical axis deflecting unit disposed on a projection optical axis of the distance measuring light for deflecting an optical axis of the distance measuring light at a deflection angle as required and in a direction as required, a second optical axis deflecting unit disposed on a light receiving optical axis for deflecting the reflected distance measuring light at the same deflection angle and in the same direction as the first optical axis deflecting unit and a projecting direction detecting unit for detecting a deflection angle and a deflecting direction by the first optical axis deflecting unit, wherein it is so arranged that the distance measuring light is projected through the first optical axis deflecting unit and the reflected distance measuring light is received by the photodetection element through the second optical axis deflecting unit and a three-dimensional data of a measuring point is obtained based on a distance measuring result of the distance measuring unit and a detection result of the projecting direction detecting unit.
H04N 13/25 - Image signal generators using stereoscopic image cameras using two or more image sensors with different characteristics other than in their location or field of view, e.g. having different resolutions or colour pickup characteristicsImage signal generators using stereoscopic image cameras using image signals from one sensor to control the characteristics of another sensor
The invention provides a posture detecting device, which comprises a tilt detecting unit as rotatably supported around two shafts perpendicular each other to an outer frame and for detecting a tilting from the horizontal, encoders provided on each of the shafts, motors provided so as to rotate each shaft, and a first arithmetic processing unit for driving/controlling the motor based on a detection result from the tilt detecting unit, wherein the first arithmetic processing unit drives the motors so that the tilt detecting unit detects the horizontal based on a signal from the tilt detecting unit when the outer frame is tilted and calculates a posture of the outer frame based on outputs of the encoders when the tilt detecting unit detects the horizontal.
An image acquiring device comprises a first camera 14 for acquiring video images, consisting of frame images continuous in time series, a second camera 15 being in a known relation with the first camera and used for acquiring two or more optical spectral images of an object to be measured, and an image pickup control device 21, and in the image acquiring device, the image pickup control device is configured to extract two or more feature points from one of the frame images, to sequentially specify the feature points in the frame images continuous in time series, to perform image matching between the frame images regarding the frame images corresponding to the two or more optical spectral images based on the feature points, and to synthesize the two or more optical spectral images according to the condition obtained by the image matching.
H04N 13/25 - Image signal generators using stereoscopic image cameras using two or more image sensors with different characteristics other than in their location or field of view, e.g. having different resolutions or colour pickup characteristicsImage signal generators using stereoscopic image cameras using image signals from one sensor to control the characteristics of another sensor
An intraocular lens system according to an embodiment includes a lens, a converter, and a driver. The lens is placed in the lens capsule, and configured to allow at least changes of the focal length. The converter is placed in the lens capsule, transmits part of incident light therethrough, and converts the energy of other part of the light into electrical energy. The driver is placed in the lens capsule, operates with the electrical energy obtained by the converter, and is used to change the focal length of the lens.
A system including a pointing rod 4 positioned on a measurement point X, a prism 3 fixed at a position deviated by a first fixed length L1 from the measurement point X in an axial direction PP of the pointing rod 4, an inclination casing 5 for fixing an analysis pattern 41 located at a position deviated by a second fixed length L2 from the prism 3 in an axial direction of the pointing rod 4 and is perpendicular to a surface with respect to the axial direction of the pointing rod 4, and a survey machine 2 having an image-taking section 22, a section of measuring a distance to the prism, and a section of measuring an angle 11,12. The position of the measurement point is measured from a position of the prism 3, an inclination direction A of the pointing rod 4, and the first fixed length L1.
A retinal prosthesis system according to an embodiment includes a converter, a retinal prosthesis, and a transmitter. The converter is placed in an eye, and transmits part of light incident on the eye therethrough while converting the energy of the other part of the light into electrical energy. The retinal prosthesis is placed in the eye and includes a photoelectric conversion element array configured to operate with the electrical energy received from the converter to detect the light having transmitted through the converter to generate an electrical signal. The transmitter is used to send the electrical signal generated by the retinal prosthesis to the visual cortex of the brain.
To provide a measurement system in which a desired reflection target is properly identified. The system 1 includes a prism 4, and a total station 3 which, for conducting distance measurement based on reflected distance-measuring rays which are output to the prism 4 and reflected therefrom. The prism 4 is equipped with specific identification information such that the total station 3 sets up the identification information 6, and incorporates the specific identification information 6 of the prism 4 for checking the above specific identification information 6 and the setup identification information 6.
