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WO2007036356A1 - Dispositif destine au test de la vision binoculaire - Google Patents

Dispositif destine au test de la vision binoculaire Download PDF

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Publication number
WO2007036356A1
WO2007036356A1 PCT/EP2006/009407 EP2006009407W WO2007036356A1 WO 2007036356 A1 WO2007036356 A1 WO 2007036356A1 EP 2006009407 W EP2006009407 W EP 2006009407W WO 2007036356 A1 WO2007036356 A1 WO 2007036356A1
Authority
WO
WIPO (PCT)
Prior art keywords
beam paths
eyes
eye
optotypes
light distributions
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
PCT/EP2006/009407
Other languages
German (de)
English (en)
Inventor
Michael Mrochen
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.)
IROC AG
Original Assignee
IROC AG
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 IROC AG filed Critical IROC AG
Publication of WO2007036356A1 publication Critical patent/WO2007036356A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/08—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing binocular or stereoscopic vision, e.g. strabismus
    • 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
    • A61B3/1015—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for wavefront analysis
    • 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
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
    • 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
    • A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
    • 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
    • A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement

Definitions

  • the invention relates to a device for binocular visual examination.
  • the human eye is an optical system having a plurality of lenticular elements for focusing light rays on the retina of the eye to image the objects from which the light rays come. Deviations of the light rays from the intended course are called aberrations. Binocular visual acuity is understood to mean the - usually in humans given - view of an object with both eyes simultaneously. These aberrations depend not only on the characteristics of the individual eyes, but also on the binocular visual acuity.
  • US 2005/0094100 A1 describes a device for binocular visual acuity testing in which (exclusively) wavefront measurements are made.
  • the evaluation of the wavefront aberrations is purely apparative, i. directly in a computer without the patient being included in a feedback loop.
  • US-B-5963300 shows a binocular meter in which the two eyes of the patient are illuminated to measure the wavefronts of the reflected radiation.
  • EP0038525B1 describes an eye refractometer for objective refraction determination of the eye with an optometer system for imaging a test mark on the retina of the eye.
  • DE 101 03 763 C2 shows a device for the subjective determination of aberrations of higher orders in an optical system (eye) with at least one observation channel, in which plates with optically active structures are used, which correspond to a defined Zernike polynomial.
  • the invention is based on the object to provide a device for the binocular visual acuity test, which delivers the most accurate measurement results with relatively little equipment.
  • the invention provides a device for the binocular visual examination, each having one beam path for each eye comprising: Means for optional setting of higher order aberrations including coma and spherical aberration,
  • the patient preferably serves as a "sensor" and, by answering questions during the visual test, provides feedback regarding the optical imaging qualities.
  • said optical means of one beam path are independently adjustable by the optical means of the other beam path.
  • the definable aberrations are essentially the spherical aberration and coma.
  • a system for detecting the position and optionally orientation of both eyes, for example a video eye tracker.
  • the device has a radiation source for self-calibration.
  • a further embodiment of the device provides a radiation source for the generation of one or more light spots on the retina of both eyes, for example this may be an infrared SLD.
  • a common display device is provided for both beam paths, that is to say the beam paths of both eyes, on which optotypes for the visual acuity test can be displayed.
  • Such a display is therefore a "visual stimulus", which may be, for example, a monitor, a chart projection, an LCD, etc.
  • each of the two beam paths each provide an optically separate display for optotypes, which then in the patient to be examined a spatial visual impression can be generated.
  • For visual acuity stimulus may also be provided another optics, for example, a telescope or a zoom lens to create a particular Sehstimulus, for example, a view into the distance to an object.
  • another optics for example, a telescope or a zoom lens to create a particular Sehstimulus, for example, a view into the distance to an object.
  • a further embodiment of the invention provides controllable optical components in the beam paths in order in particular to achieve a magnifying image of optotypes in the eyes. With these optical elements, lighting conditions are also achieved with respect to the optotypes and eyes, which are optimal for clinical vision examination.
  • Another embodiment of the invention provides a measuring device in the beam paths for measuring point light distributions in the eye. With a computer, the wavefront aberration can then be determined on the basis of the point light distributions. A measurement of the wavefront aberration is possible in the present invention, but not essential.
  • the computer can derive control data from determined wavefront aberrations for controlling the point light distributions on the retina.
  • the figure shows schematically a device for the binocular visual examination.
  • the device described below is for the determination of binocular visual acuity and the simulation of a best possible binocular optical correction in patients with reduced accommodation ability. So it's a presbyometer.
  • Binoculars are examined to be the two eyes (Al, A2) of a patient.
  • the device has a so-called visual stimulus (1), that is, for example, a display device, such as a monitor, a vision projection, or an LCD display device, which the patient looks into with both eyes.
  • a visual stimulus that is, for example, a display device, such as a monitor, a vision projection, or an LCD display device, which the patient looks into with both eyes.
  • a telescope or a zoom lens in order to generate a specific visual stimulus, such as, for example, a distant view of an object. It can be provided at this point, two independent displays for the leading to the eyes Al, A2 beam paths.
  • Optical elements are indicated in the figure by the reference numeral 2 and distribute themselves to different positions.
  • a beam splitter optics 3 separates the radiation coming from the visual stimulus into two beam paths, which lead here to the eye A1 and the eye A2.
  • the two beam paths and their optical means, elements, etc. are analog, so that only the beam path leading to the one eye Al needs to be described below.
  • an aberration generator 4 for producing aberrations of a higher order, ie in particular spherical aberrations and coma.
  • an aberration generator can, for example, by a
  • Liquid lens a liquid crystal display, a sliding lens or deformable mirror can be realized.
  • the radiation From the aberration generator 4, the radiation enters a defocus compensator 5, for example according to the bandaloptometer principle. Da ⁇ ach the radiation passes through another optical element 2 to a Astig matismkompensator 6, for example in the form of a cross-cylinder compensator. From there, the radiation passes through a partially transparent mirror 11 to the eye Al.
  • a defocus compensator 5 for example according to the bandaloptometer principle. Da ⁇ ach the radiation passes through another optical element 2 to a Astig matismkompensator 6, for example in the form of a cross-cylinder compensator. From there, the radiation passes through a partially transparent mirror 11 to the eye Al.
  • the reference numeral 7 denotes a measuring device for a PSF (Point Spread Function) of the eye, for example according to the principle of Hartmann-Shack.
  • PSF Point Spread Function
  • spherical aberrations or coma defined with the device, optionally in combination with defocus and cylinder, are adjusted to provide the eye with greater depth of field.
  • a greater depth of field leads to a loss of vision or to a loss in terms of contrast vision.
  • Such loss in contrast vision can then be quantified with the visual test.
  • the clinical background of such measurements is the prediction of refractive results
  • the beam path for the second eye A2 is identical, starting from the beam splitter 3, wherein corresponding optical means are provided with the same reference numerals.
  • a radiation source 9 for self-calibration of the system for example in the form of a laser diode.
  • the radiation is detected by, for example, the measuring device 7 for the PSF (for example a Hartmann-Shack measuring device or a camera) and evaluated mathematically.
  • a radiation source 10 for producing one or more light spots on the retina of both eyes.
  • an infrared SLD can be used for this purpose.
  • the light source 10 can also be replaced by a camera, or a camera can be arranged parallel to the light source 10 by means of a beam splitter in order to be used for the measurement of the above-described self-calibration.
  • polarizing filter and / or color filter can be brought into the beam paths.
  • the procedure of measuring the device is as follows:
  • the patient is asked to view the visual stimulus 1 with both eyes.
  • the corrections can be selected and adjusted either manually by the examiner, manually by the patient, or automatically by means of a frontal measurement.
  • optical errors can also be set and then a review of the near and television (visual acuity) at different binocular
  • Corrections are made to determine the best possible presbyopia correction.
  • the data thus obtained which as a rule consist of a mixture of objectively measured and subjectively determined values, can then serve as the basis for refractive corrections.

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)

Abstract

L'invention concerne un dispositif destiné au test de la vision binoculaire. Ce dispositif présente pour chaque oeil (A1, A2) un trajet de faisceau propre. Les trajets de faisceaux comportent respectivement un moyen (4) permettant le réglage sélectif d'aberrations d'ordre supérieur, y compris le coma et l'aberration sphérique, un moyen (5) permettant le réglage sélectif de défocalisations et un moyen (6) de réglage sélectif de l'astigmatie.
PCT/EP2006/009407 2005-09-27 2006-09-27 Dispositif destine au test de la vision binoculaire Ceased WO2007036356A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510046141 DE102005046141A1 (de) 2005-09-27 2005-09-27 Gerät für binokulare Visusprüfung
DE102005046141.7 2005-09-27

Publications (1)

Publication Number Publication Date
WO2007036356A1 true WO2007036356A1 (fr) 2007-04-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/009407 Ceased WO2007036356A1 (fr) 2005-09-27 2006-09-27 Dispositif destine au test de la vision binoculaire

Country Status (2)

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DE (1) DE102005046141A1 (fr)
WO (1) WO2007036356A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011113537A1 (fr) 2010-03-16 2011-09-22 Stuetz Ignaz Alois Procédé de compensation et de simulation de la distorsion (anamorphotique)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017115958A1 (de) * 2017-07-14 2019-01-17 Carl Zeiss Ag System und Verfahren für das Erfassen von Kenngrößen eines Auges

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030053030A1 (en) * 2001-08-31 2003-03-20 Adaptive Optics Associates, Inc. Ophthalmic instrument having adaptive optic subsystem with multiple stage phase compensator
US20030193647A1 (en) * 2000-02-11 2003-10-16 Neal Daniel R. Dynamic range extension techniques for a wavefront sensor including use in ophthalmic measurement
WO2005000112A1 (fr) * 2003-06-27 2005-01-06 Carl Zeiss Meditec Ag Dispositif et procede pour la determination de l'erreur de refraction d'un systeme optique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014907C2 (de) * 1980-04-18 1985-02-14 Fa. Carl Zeiss, 7920 Heidenheim Augenrefraktometer
US5963300A (en) * 1998-02-17 1999-10-05 Amt Technologies, Corp. Ocular biometer
DE10103763C2 (de) * 2001-01-27 2003-04-03 Zeiss Carl Meditec Ag Verfahren und Vorrichtung zur subjektiven Bestimmung von Abbildungsfehlern höherer Ordnung
US6827442B2 (en) * 2001-09-12 2004-12-07 Denwood F. Ross Ophthalmic wavefront measuring devices
DE10348854A1 (de) * 2003-10-20 2005-05-19 Lar Ip Ventures Inc. Verfahren und Vorrichtung zur Ermittlung der Restfehlsichtigkeit eines Patienten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030193647A1 (en) * 2000-02-11 2003-10-16 Neal Daniel R. Dynamic range extension techniques for a wavefront sensor including use in ophthalmic measurement
US20030053030A1 (en) * 2001-08-31 2003-03-20 Adaptive Optics Associates, Inc. Ophthalmic instrument having adaptive optic subsystem with multiple stage phase compensator
WO2005000112A1 (fr) * 2003-06-27 2005-01-06 Carl Zeiss Meditec Ag Dispositif et procede pour la determination de l'erreur de refraction d'un systeme optique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011113537A1 (fr) 2010-03-16 2011-09-22 Stuetz Ignaz Alois Procédé de compensation et de simulation de la distorsion (anamorphotique)
EP2371270A1 (fr) 2010-03-16 2011-10-05 Ignaz Alois Stuetz Procédé de compensation et de simulation de la distorsion d'image (anamorphique)

Also Published As

Publication number Publication date
DE102005046141A1 (de) 2007-04-05

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