EP2919641A1 - Appareil de diagnostic ophtalmique et procédé de fonctionnement - Google Patents

Appareil de diagnostic ophtalmique et procédé de fonctionnement

Info

Publication number
EP2919641A1
EP2919641A1 EP13791902.3A EP13791902A EP2919641A1 EP 2919641 A1 EP2919641 A1 EP 2919641A1 EP 13791902 A EP13791902 A EP 13791902A EP 2919641 A1 EP2919641 A1 EP 2919641A1
Authority
EP
European Patent Office
Prior art keywords
eye
images
unit
illumination
diagnostic apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP13791902.3A
Other languages
German (de)
English (en)
Inventor
Martin Drahansky
Ivo PROVAZNIK
Radim Kolar
Josef Hajek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vysoke Uceni Technicke V Brne
Original Assignee
Vysoke Uceni Technicke V Brne
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vysoke Uceni Technicke V Brne filed Critical Vysoke Uceni Technicke V Brne
Publication of EP2919641A1 publication Critical patent/EP2919641A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/14—Arrangements specially adapted for eye photography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/12—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—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/12—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
    • A61B3/1216—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 for diagnostics of the iris

Definitions

  • the invention relates to an ophthalmic diagnostic apparatus comprising means of illumination, an optical unit, a sensing unit and an electronic unit.
  • the invention further relates to a method of operation of the ophthalmic diagnostic apparatus, in which an image of the retina and/or the iris of the patient ' s eye is obtained.
  • Biometric identification of people is carried out by various methods based on sensing different biometric parameters of an identified person. It is important for the sensed biometric parameters or their combinations to ensure sufficient uniqueness of the parameters sensed and thus to enable sufficient reliability in establishing the identity of the examined person, for example for the purpose of access rights of persons to enter premises or their parts, access rights to various systems, etc.
  • One of the biometric parameters which allows a relatively reliable identification of a person is an identification based on sensing the iris and/or the retina of the human eye, which, if both parameters are combined, i.e. sensing both the iris and the retina of the human eye, enables a very safe and reliable identification of the examined person.
  • This is generally known, for example, from WO2006047002A1.
  • US 2011/0285836 A1 discloses a multimodal biometric identification system capturing and processing images of the iris and the retina for biometric identification.
  • US 2011/0285836 A1 further describes a multimodal ocular identification system which captures and processes images of iris or retina from both eyes of the subject.
  • biometrics based on the data provided by these systems is more accurate and robust than biometrics using the biometric data which include data only from the iris or only from the retina, and - in both cases - only of a single eye.
  • the apparatus according to US 2011/0285836 A1 is arranged in such a manner that it emits photons at the iris and the retina of both eyes.
  • the system for the biometric identification further comprises a housing with at least one user window on a first side, whereby the window is adapted to accommodate at least one eye of a user positioned on the first side of the housing.
  • the housing also comprises at least one opposing window on the second side of the housing, where the opposing window is aligned with at least one user window, whereby this enables transmission of images between the object external to the housing and at least one user window as well as at least one opposing window.
  • the device further comprises at least one illumination source in the housing emitting photons through the at least one user window to be reflected from at least one eye and the device also comprises at least one image sensor in the housing for capturing the image according to the photons reflected from at least one eye, the image having biometric data.
  • the disadvantage of this device is its relative complexity, even though it enables minituarization and automation.
  • the complexity consists above all in the necessity to utilize different wavelengths of light for the iris and the retina sensing, which either requires using separate systems - an illumination source - a sensor for the retina and the iris sensing, or it requires consecutive switching between a pair of illumination sources and capturing both images (of both the iris and the retina) by one sensor, which in turn results in lower quality of sensing caused by the decrease in the number of images per second.
  • US 2008/018855 A1 proposes a solution for detecting aberrations of the human eye and automatic determination of a required correction by means of projecting special patterns onto the eye regions and their sensing by a digital sensor, e.g. by a CCD camera, followed by automatic evaluation.
  • the system employs a relatively complex 3D structure by positioning a part of the optical system so as to obtain a high quality image.
  • the system as such aims at the automation of the process of determining the required correction of the eye disorders in the field of dioptric correction, such as refraction, astigmatism, etc.
  • US 2012/150064 A1 describes a method for carrying out procedures based on sensing biometric data from the human eye. Improvement of the acquired image resolution is accomplished by using parallel stochastic perturbative gradient descent (PSPGD) optimization with the purpose of reducing the costs and dimensions of the apparatus when compared to the existing known optical sensing systems.
  • PSPGD stochastic perturbative gradient descent
  • WO 0 199 027 A2 discloses an identification apparatus with a remote data entry, which can be used for identification of individuals in emergency, when the identified person is not able to provide the required data.
  • the system has the form of a portable device which consists of means of sensing biometric data from the human eye (the iris, the retina) and further consists of communications means of connecting to the base, from which on the basis of the sent captured biometric data of the person ' s eye the system returns data about the person ' s identity, health state, possibly also data necessary for the resuscitation of the person in question etc.
  • the aim of the invention is to eliminate or at least reduce the disadvantages of the background art.
  • an ophthalmic diagnostic apparatus whose principle consists in that means of illumination are arranged in the tube of an illumination unit, in front of which an ocular is arranged, whereby arranged behind the tube of the illumination unit is an adaptive optical system, behind which a sensing unit is arranged, wherein the illumination unit, the adaptive optical system and the sensing unit are connected to the electronic unit, which is coupled with an expert system for diagnosing eye diseases and disorders and with the database of the patients ' images.
  • the principle of this method of the ophthalmic diagnostic apparatus consists in that the process of obtaining the image of the retina and/or the iris of the patient ' s eye and its evaluation as well as making a diagnosis takes place in the automatic mode in which after sensing the eye data are automatically pre-processed for image acquisition, subsequently the acquired images are used as input data for the connected expert system, by which the images are automatically evaluated, and which either makes a diagnosis of a possible eye disesase directly according to a connected database of eye diseases and disorders and/or provides the operator/doctor with a narrow range of possible eye diseases so that the operator/doctor can make a final decision.
  • the advantage of this solution is a completely independent process of sensing the retina and the iris of the patient ' s eye by one apparatus and processing the acquired biometric data for diagnosing eye defects of the patient and also for automatic determination of the progression or degression of a condition previously detected in or on the eye of the patient.
  • this apparatus and its method of operation enable to carry out all the procedures even when the patient is in a coma, which is currently practically impossible because using the majority of ophthalmic apparatuses require cooperation from the patient, and therefore this apparatus significantly improves for example the diagnostics of possible cases of damage to the eye caused for instance by an accident, etc.
  • Fig. 1 shows an overall diagram of the arrangement of the apparatus according to the invention
  • Fig. 2 is a flowchart of the decision logic of the apparatus
  • Fig. 3 represents the arrangement of the sensing system.
  • the ophthalmic diagnostic apparatus which is schematically represented in Fig. 1 , is used as follows: the patient puts his eye 6 directly on the eye-piece 1, which is connected to a tube with an illumination unit 2.
  • This illumination unit 2 comprises LED illuminating elements emitting radiation in the IR spectrum and visible light, whereby the first part constitutes illumination 20 for acquiring the iris images and the second part constitutes the illumination 2 ⁇ for acquiring the retinal images.
  • the parts 20, 21 have a different construction within the illumination unit 2, because the illumination of the iris of the eye 6 is surface illumination, whereas the illumination of the retina of the eye 6 involves the illumination of the inner surface of the eye 6.
  • the used radiation correctly accentuates important information in the retina and in the iris of the eye 6.
  • the illumination 20 for obtaining the iris images is provided with a set of infrared diodes emitting light from the region near the infrared light (IR) up to the maximum wavelength of 1000 nm, typically for example the wavelengths of 780 nm, 870 nm, 940 nm, whereby this illumination 20 further comprises complementary diodes emitting visible white light, which serves to throw additional light on the eye 6 to influence the contraction/expansion of the pupil.
  • IR infrared light
  • the illumination ⁇ _ for obtaining the retina images comprises a focusing source of infrared light IR with the wavelength of 780 nm, which serves to focus the adaptive optical system 3.
  • the retina image acquisition itself then takes place by the visible white light radiation in order to obtain a colour image of the retina.
  • the illumination 2J. for obtaining the retinal images includes a pair of crossed polarizing filters - the polarizing filter 210, which, in connection with the polarizing filter 30 of the adaptive optical system 3 situated before the sensing unit 4, enables to filter off the light reflected on the surface of/inside the eye 6.
  • the illumination 21 for obtaining the retinal images is in the advantageous embodiment in Fig. 3 is provided with a hollow circular aperture 220, i.e. an aperture with a gap shaped as an annular ring, which creates a light beam with a doughnut shaped aperture.
  • the beams reflected from the retina then pass through the centre of this aperture, by which means it is ensured that the optical pathway of the illuminating beams is separated from the optical pathway of the beams reflected from the eye 6.
  • the illumination unit 2 is equipped with means of creating the so-called optical accommodative point, i.e. a point visible by the patient, at which the patient ' s eye 6 aims and focuses on it.
  • the optical axis of the patient eye 6 is aligned with the optical axis of the apparatus, which is important, for example, for the localization of the so-called blind spot on the retina of the eye 6, i.e. the point at which the optic nerve enters the eye 6 and through which the bloodstream flows into the retina.
  • the highest density of biometric information for identifying a person according to the retina. Due to the centering of the eye 6 (of the optical axis) it is possible to capture the image of the retina of the eye 6.
  • the eye 6 of every patient is always fixed approximately in the same position, which facilitates the subsequent pre-processing of the image by means of algorithms for identification and extraction of distinctive features of the retina and the iris of the eye 6 that is being sensed. Without focusing the eye 6 on the accommodative point, i.e. without the accommodation of the eye, it would be very difficult, if not even impossible, to capture the image of the retina of the eye 6.
  • the eye-piece 1 not only fixes the placing of the eye 6 in a position suitable for sensing, but at the same time also baffles the ambient light, and therefore the pupil of the eye 6, which is the part of the eye that regulates the amount of light entering the eye 6, does not contract and so it does not reduce the sensed area of the retina of the eye 6, because on a greater area sensed it is possible to identify a greater number of distinctive features for the diagnostics of the eye 6.
  • the tube with an illuminating unit 2 is connected to an adaptive optical system 3, which has an electrically controlled focus and aperture, and so it is possible to sense both the retina and the iris of the eye 6 by one optical system, whereby it is necessary to move the focus of the adaptive optical system 3 by the order of several millimeters and at the same time adapt the aperture so that the follow-up sensing unit 4 could cope with a different type of the sensed parts of the human eye 6.
  • a sensing unit 4 Arranged behind the adaptive optical system 3 is a sensing unit 4, which comprises a CCD and/or a CMOS optical image sensor chip, which captures the image of the retina and the iris of the eye 6 by read-out.
  • the sensing of the retina is carried out by a scanning method, in which the source of illumination is a semiconductor laser generating radiation of medium wavelengths (approximately 500 nm ⁇ 100 nm). A light beam emitted from this laser is deflected in a horizontal and vertical direction by means of a pair of electrolytical deflecting mirrors and the reflection of this light beam from the retina is recorded on a photosensitive element, for example on a photodiode or phototransistor, to be further processed.
  • the source of illumination is a semiconductor laser generating radiation of medium wavelengths (approximately 500 nm ⁇ 100 nm).
  • a light beam emitted from this laser is deflected in a horizontal and vertical direction by means of a pair of electrolytical deflecting mirrors and the reflection of this light beam from the retina is recorded on a photosensitive element, for example on a photodiode or phototransistor, to be further processed.
  • this scanning method is employed for obtaining the retinal image, it is necessary to complement the adaptive optical system 3 by a semi-transparent mirror, which reflects the radiation from the above-mentioned laser towards the retina of the eye 6 and, conversely, transmits the light reflected from the retina to the above-mentioned photosensitive element, i.e. detector.
  • the retinal images can also be obtained for example by means of linear laser technology, when the retina is sensed after being illuminated by a linear laser. This enhances the accuracy of the sensing process.
  • the adaptive optical system 3 (that is focusing/optical zoom, shutter) is controlled either directly by the sensing unit 4, or by the connected electronic unit 7. which is equipped not only with means - both hardware and software- for obtaining image data from the sensing unit, but it is also equipped with means of controlling the adaptive optical system 3 and the illumination unit 2.
  • the electronic unit 7 comprises a digital signal processor (DSP) or a microcontroller, or, possibly, an FPGA element, internal memory, communication interface, such as Ethernet, USB, means of wireless transmission and other necessary electronic components.
  • DSP digital signal processor
  • the illumination unit 2, the adaptive optical system 3 and the sensing unit 4 are connected to the electronic unit 7, which controls their operation.
  • the electronic unit 7 comprises means of turning on and off the optical accommodative point, or means of changing its intensity or the colour of its light.
  • the electronic unit 7 further comprises means of turning on or off the illumination unit 2, or turning on and off selectively particular LED illuminating elements with respective wavelengths.
  • the electronic unit 7 comprises means of changing the intensity of the radiation of the illumination unit 2 or also means of changing selectively the radiation of particular LED illuminating elements with respective wavelengths.
  • the electronic unit 7 further comprises means of changing the focusing/zoom and the aperture of the adaptive optical system 3.
  • the electronic unit 7 further comprises means of obtaining image data (samples) from the sensing unit 4.
  • the electronic unit 7 further comprises means of processing image data (of the retina and the iris of the eye) for extraction of distinctive features, which are subsequently used for automated ophthalmologic examination of the eye 6.
  • the electronic unit 7 further comprises means of extraction of distinctive features from the acquired samples for the purpose of automated ophthalmologic examination of the eye 6, whereby these means are composed particularly of software equipment and method of its operation, as will be described below.
  • the electronic unit 7 also comprises means of creating a biometric pattern according to appropriate standards (e.g. CBEFF), which can be either stored in the internal memory of the apparatus, which is protected, or can be sent outside of the apparatus itself by using a communications interface, such as Ethernet, USB, wireless transmission, etc.
  • appropriate standards e.g. CBEFF
  • the electronic unit 7 further comprises means of importing the biometric pattern from the environment outside the apparatus by means of a communication interface, e.g. Ethernet, USB, wireless transfer, etc.
  • a communication interface e.g. Ethernet, USB, wireless transfer, etc.
  • the electronic unit 7 also comprises means of comparing extracted features of the current sample, i.e. the current biometric pattern, with the samples of the biometric pattern already recorded, or the previous biometric pattern either from protected internal memory, or from an external data storage device.
  • the electronic unit 7 further comprises means of issuing match or non-match decisions of the compared biometric patterns. This decision is afterwards passed to an external device through a communication interface, such as Ethernet, USB, wireless transmission, etc., or it is considered to be an automatic initial confirmation of the identity of the examined patient in order to avoid the results of different patients being confused and to obtain valid information regarding the state of the eye 6 that is examined in relation to the previous examinations, as will be described hereinafter.
  • a communication interface such as Ethernet, USB, wireless transmission, etc.
  • an example of embodiment includes a 3D adaptable stage, on which are arranged an eye-piece 1, a tube with a illumination unit 2, an adaptive optical system 3 and a sensing unit 4 and that enables the accurate positioning of these parts of the device in the optical axis of the eye 6 with the purpose of optimization of sensing. That means that this is an autonomous system for eye diagnostics 6, which improves the user ' s comfort, the whole process of sensing and subsequent evaluation, including comparison of the results of the current examination with the previous results, being fully autonomous and automatic.
  • the ophthalmic diagnostic apparatus according to the present invention can be complemented by other measurements used in ophthalmology, such as the measurement of intraocular pressure, etc.
  • the ophthalmic diagnostic apparatus works in such a manner that the whole process of sensing is performed in the automatic mode, which does not require much of a cooperation on the part of the patient and at the same time the operator ' s (doctor ' s) role has been made significantly easier, since a number of individual steps which are otherwise carried out by the operator/doctor are automated, including making a diagnosis, making comparisons with the previous state, selecting a region of interest of the acquired image of the eye 6 for more specific diagnostics and automation of more detailed diagnostics, including automatic implementation of more specific diagnostics in the selected region of the image during the next medical examination and its comparison with the previous state, etc.
  • a person puts the eye on the area of the eye-piece 1 and fixes the eye on the accommodative point.
  • the illumination 2 is turned off, the illumination 20 is on.
  • the adjustable lens 8 and polarizing filter 30 are removed from the optic pathway.
  • the sensing unit 4 captures the image of the eye 6 and the 3D adaptable stage automatically positions the optical axis of the device to the optical axis of the eye 6.
  • IR LED illumination is used to provide light.
  • IR filter 40 Arranged in the optic pathway before the sensing unit 4 is IR filter 40, whose transparency band overlaps the spectral band of IR LED illumination 20.
  • the intensity of IR LED and white LED illuminating elements in the illumination 20 is modified, which leads to the contraction of the pupil of the eye 6.
  • the iris image is acquired.
  • the illumination 21_ with the active IR LED elements turns on and an adjustable lens 8 of the objective of the adaptive optical system 3 enters the optic pathway and automatic focusing on the retina of the eye 6 follows.
  • the white LED elements of the illumination 21 are activated and the IR filter 40 is displaced from the optical path.
  • the image of the retina is acquired.
  • the apparatus works in such a manner that after acquiring the images of the iris, the retina, or also intraocular pressure and, possibly, other parameters, automatic preprocessing of data is carried out so as to obtain the images. Afterwards the images thus acquired serve as entry data for the linked expert system, or, as the case may be, for a learning expert system, which automatically analyses the acquired images and either makes a diagnosis of a possible disease of the eye 6 directly, or provides the operator/doctor with a narrow range of possible diseases of the eye 6 so that the operator/doctor can make a decision. Medical records of each procedure of sensing can be safely stored for every patient in digital form and can be automatically as well as manually monitored.
  • comparisons can be made during a long period of time from the point of view of the detected disease and its treatment, which provides a very detailed comparison of the development of the disease both to the doctor and the patient, including the possibility to process automatically plausible differences between the images of one eye 6 of one patient in different periods of time by the connected expert system, and so it is possible to monitor very accurately a long-term development of the disease or, possibly, determine whether the treatment was successful.
  • This parameter not only helps doctors, making their work easier, but can be also utilized for scientific research in ophthalmology.
  • the electronic unit 7 further comprises means of automatic or manual selection of a region of interest of the examined eye 6, e.g. means of a circular or oval or a different shaped selection of a limited area of the image.
  • region of interest denotes for example the spot where a problem or a potential problem was detected during current examination or during any of the previous examinations, and so the apparatus focuses automatically on the spot and therefore can sense it for example with a higher degree of sensitivity, by which means it is possible to observe only the selected region of the eye with, for example, a pathological or potentially pathological finding, whereby the finding on a limited area of the acquired image is stored in the connected database of findings, which is, for instance, advantageous not only from the medical, but also from the technical point of view, since in contrast with storing the whole image, which takes up a lot of space, by storing only a selected part of the image it is possible to save the storage space of the device.
  • the electronic unit 7 comprises means of connection to the database of patients and means of connection to the expert system, which may be formed either by means of the electronic unit, or it may be formed by a separate electronic device, or by a combination of both.
  • the expert system comprises a database of eye diseases and disorders and their distinctive features or it is connected to this database, wherein it is provided with means of comparing the acquired images of the eye 6 of the patient and may be also provided by means of comparing different images of the same eye 6 and their evaluation in cooperation with the expert system.
  • the expert system is also equipped with means of extending autodiagnostic capabilities and ensuring more accurate results of autodiagnostics, such as the database update, working algorithm update, the learning system according to the decisions made by the operator/doctor about the correction of the results of the examination on the basis of recommendations or decisions of the expert system, etc.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention concerne un appareil de diagnostic ophtalmique, comprenant des moyens d'éclairage, une unité optique, une unité de détection et une unité électronique. Les moyens d'éclairage sont placés dans le tube d'une unité d'éclairage (2) à l'avant de laquelle est placé un oculaire (1). Derrière le tube de l'unité d'éclairage (2) se trouve un système optique adaptatif (3), derrière lequel l'unité de détection (4) est placée, l'unité d'éclairage (2), le système optique adaptatif (3) et l'unité de détection (4) étant reliés à l'unité électronique (7) qui est couplée à un système d'expert pour diagnostiquer des maladies et troubles oculaires et à la base de données d'images de patients. L'invention concerne en outre un procédé de fonctionnement de l'appareil de diagnostic ophtalmique, selon lequel une image de la rétine et/ou de l'iris de l'œil du patient est obtenue. Le procédé d'acquisition de l'image de la rétine et/ou de l'iris de l'œil (6) du patient, ainsi que son évaluation et la réalisation d'un diagnostic sont réalisés en mode automatique selon lequel, après détection de l'œil, des données sont automatiquement pré-traitées pour une acquisition d'image, puis les images acquises sont utilisées comme données d'entrée pour le système d'expert connecté, les images acquises étant automatiquement analysées; ce mode permet de réaliser un diagnostic de maladie possible de l'œil (6) indépendamment, selon la base de données de maladies et troubles oculaires connectée, et/ou de fournir à l'opérateur/médecin une plage étroite de maladies possibles de l'œil (6), de sorte que l'opérateur/médecin peut prendre une décision finale.
EP13791902.3A 2013-09-30 2013-09-30 Appareil de diagnostic ophtalmique et procédé de fonctionnement Ceased EP2919641A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CZ2013/000119 WO2015043553A1 (fr) 2013-09-30 2013-09-30 Appareil de diagnostic ophtalmique et procédé de fonctionnement

Publications (1)

Publication Number Publication Date
EP2919641A1 true EP2919641A1 (fr) 2015-09-23

Family

ID=49585231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13791902.3A Ceased EP2919641A1 (fr) 2013-09-30 2013-09-30 Appareil de diagnostic ophtalmique et procédé de fonctionnement

Country Status (2)

Country Link
EP (1) EP2919641A1 (fr)
WO (1) WO2015043553A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110091083A1 (en) * 2008-05-14 2011-04-21 Jiang Liu Automatic cup-to-disc ratio measurement system
US20110299034A1 (en) * 2008-07-18 2011-12-08 Doheny Eye Institute Optical coherence tomography- based ophthalmic testing methods, devices and systems
US20120287401A1 (en) * 2011-05-09 2012-11-15 Carl Zeiss Meditec, Inc. Integration and fusion of data from diagnostic measurements for glaucoma detection and progression analysis

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997046979A1 (fr) * 1996-06-06 1997-12-11 British Telecommunications Public Limited Company Appareil d'identification personnelle
US6116736A (en) * 1999-04-23 2000-09-12 Neuroptics, Inc. Pupilometer with pupil irregularity detection capability
AU2001268560A1 (en) 2000-06-20 2002-01-02 Mark B. Freeman Information delivery system for application when time is of the essence
US7377647B2 (en) 2001-11-13 2008-05-27 Philadelphia Retina Endowment Fund Clarifying an image of an object to perform a procedure on the object
RU2268637C2 (ru) 2004-03-22 2006-01-27 Андрей Викторович Ларичев Аберрометр с системой тестирования остроты зрения (варианты), устройство и способ его настройки
US7248720B2 (en) 2004-10-21 2007-07-24 Retica Systems, Inc. Method and system for generating a combined retina/iris pattern biometric
US7448753B1 (en) * 2005-07-19 2008-11-11 Chinnock Randal B Portable Digital Medical Camera for Capturing Images of the Retina or the External Auditory Canal, and Methods of Use
US7290880B1 (en) * 2005-07-27 2007-11-06 Visionsense Ltd. System and method for producing a stereoscopic image of an eye fundus
WO2008039252A2 (fr) 2006-05-15 2008-04-03 Retica Systems, Inc. Système biométrique oculaire multimodal
US20130083185A1 (en) * 2011-09-30 2013-04-04 Intuitive Medical Technologies, Llc Optical adapter for ophthalmological imaging apparatus
US9585578B2 (en) * 2011-12-02 2017-03-07 Third Eye Diagnostics, Inc. Devices and methods for noninvasive measurement of intracranial pressure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110091083A1 (en) * 2008-05-14 2011-04-21 Jiang Liu Automatic cup-to-disc ratio measurement system
US20110299034A1 (en) * 2008-07-18 2011-12-08 Doheny Eye Institute Optical coherence tomography- based ophthalmic testing methods, devices and systems
US20120287401A1 (en) * 2011-05-09 2012-11-15 Carl Zeiss Meditec, Inc. Integration and fusion of data from diagnostic measurements for glaucoma detection and progression analysis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2015043553A1 *

Also Published As

Publication number Publication date
WO2015043553A1 (fr) 2015-04-02

Similar Documents

Publication Publication Date Title
JP6141140B2 (ja) 眼科撮影装置
US7290880B1 (en) System and method for producing a stereoscopic image of an eye fundus
US20070171363A1 (en) Adaptive photoscreening system
JP2015033472A (ja) 眼科撮影装置
US10694938B2 (en) Purkinje meter and method for automatic evaluation
US9566000B2 (en) Method for detecting amyloid beta plaques and drusen
CN110996761B (zh) 用于执行眼睛的宽视野眼底照相成像的非散瞳、非接触系统和方法
US20210390692A1 (en) Detecting and tracking macular degeneration
JP6886748B2 (ja) 眼撮影装置及び眼撮影システム
KR102244134B1 (ko) 안저 촬영 장치 및 이를 이용하는 안저 촬영 방법
JP3848953B2 (ja) 生体眼判定方法および生体眼判定装置
JP6392408B2 (ja) 眼科装置
JP7430082B2 (ja) 眼科装置及びその作動方法
WO2015043553A1 (fr) Appareil de diagnostic ophtalmique et procédé de fonctionnement
JP4527088B2 (ja) 生体眼判定方法および生体眼判定装置
EP3695775B1 (fr) Dispositif optique portatif basé sur un téléphone intelligent et procédé de capture d'images rétiniennes non mydriatiques
CZ305278B6 (cs) Oftalmologické diagnostické zařízení a způsob jeho činnosti
KR100362484B1 (ko) 고정초점 카메라를 이용한 홍채이미지 획득방법 및 획득장치
CZ26535U1 (cs) Oftalmologické diagnostické zařízení
EP3440990A1 (fr) Système d'imagerie d'un fond d'oeil
JP2000237168A (ja) 眼科検査装置
CZ308634B6 (cs) Zařízení pro snímání očního pozadí a způsob jeho činnosti
KR102103863B1 (ko) 진단결과 공유 장치, 방법 및 시스템
CN213097815U (zh) 一种照明光源与固视光源同轴的眼底相机
JP6422529B2 (ja) プログラムおよび眼科システム

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150619

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180928

REG Reference to a national code

Ref country code: DE

Ref legal event code: R003

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20191115