EP1641382A1 - Dispositif et procede pour la determination de l'erreur de refraction d'un systeme optique - Google Patents

Dispositif et procede pour la determination de l'erreur de refraction d'un systeme optique

Info

Publication number
EP1641382A1
EP1641382A1 EP04740327A EP04740327A EP1641382A1 EP 1641382 A1 EP1641382 A1 EP 1641382A1 EP 04740327 A EP04740327 A EP 04740327A EP 04740327 A EP04740327 A EP 04740327A EP 1641382 A1 EP1641382 A1 EP 1641382A1
Authority
EP
European Patent Office
Prior art keywords
optical element
controllable
optical system
ametropia
measuring
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
EP04740327A
Other languages
German (de)
English (en)
Inventor
Peter Wengler
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.)
Carl Zeiss Meditec AG
Original Assignee
Carl Zeiss Meditec 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 Carl Zeiss Meditec AG filed Critical Carl Zeiss Meditec AG
Publication of EP1641382A1 publication Critical patent/EP1641382A1/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
    • A61B3/02—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
    • 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
    • A61B3/14—Arrangements specially adapted for eye photography

Definitions

  • the present invention relates to a device and a device for determining the ametropia of an optical system.
  • ametropia of the human eye e.g. to be subjectively determined by the patient through lens arrangements upstream in the beam path of the eye.
  • the correction of myopia, hyperopia and astigmatism can e.g. take place by the doctor offering the patient lenses in a spectacle frame, the patient being able to subjectively correct the correction of his ametropia using an eye chart. Instead of using different lenses with trial glasses, this can also be done with a phoropter.
  • an objective measurement is usually first carried out using an automatic refractometer or aberrometer, which is then subjectively confirmed or corrected. This generally requires two work steps, which can be associated with a change of location between the doctor and the patient.
  • a disadvantage of known devices and methods is that the objective determination of correction values and the subjective determination or correction of the objective measurement values take place in different work steps and sometimes also lead to significantly different results.
  • the present invention is therefore based on the object of specifying a device and a method in which the objective and the subjective determination of the correction values are more closely combined.
  • a device for determining the ametropia of an optical system comprising a controllable optical element which is controlled by a measuring and control device and whose optical properties can be changed automatically and / or manually.
  • the optical system can be the human eye itself, but it can also be a human eye, for example has been supplemented by means of a contact lens, at least one intraocular lens, glasses, a combination of these elements or the like.
  • the measuring and control device preferably comprises an automatic refractometer or aberrometer and an electronic circuit for controlling the controllable optical element.
  • the controllable optical element can preferably be an electrically controllable phoropter, or else a lens or mirror system, for example an optometer and astigmeter.
  • the controllable optical element and the measuring and control device form a control loop that minimizes the remaining ametropia of the optical system.
  • the optical system comprises a human eye and, if necessary, additionally an artificial visual aid.
  • the controllable optical element can be a lens or mirror system, e.g. an optometer and astigmeter or an electrically controllable phoropter. It is also conceivable that the controllable optical element is an adaptive optical system, e.g. a controllable membrane mirror, micro element mirror, a controllable liquid lens or liquid crystal lens. It is also conceivable within the scope of the invention to use a combination of different controllable optical elements.
  • the measuring and control unit can comprise an automatic refractometer or aberrometer, wherein this aberrometer can in particular include a Shack-Hartman sensor, a Tscherning arrangement, a Talbot interferometer, a Talbot-Moire interferometer, a confocal wavefront sensor or a point spread function sensor ,
  • this aberrometer can in particular include a Shack-Hartman sensor, a Tscherning arrangement, a Talbot interferometer, a Talbot-Moire interferometer, a confocal wavefront sensor or a point spread function sensor ,
  • the controllable phoropter can contain phase plates.
  • these can have an arbitrarily defined, locally distributed phase shift for light, which is suitable for also compensating for complex disturbances in the optical system to be examined.
  • the complex disturbances can in particular contain higher-order aberrations, which are described, for example, with the aid of a wavefront, which represents the local distribution of the phase shift or the transit time difference for the light.
  • the device for determining the ametropia of an optical system can also be designed such that dynamic processes, in particular those of accommodation, are recorded.
  • fixation incentives visual samples
  • the fixation incentives can include eye charts, static and / or dynamic images, 3-dimensional targets, binocular targets such as Polatest, or special geometric patterns to identify individual aspects of the ametropia optical system.
  • These various fixation incentives can advantageously be generated with electronic displays, such as liquid crystal, plasma, deformable mirror or microdisplays. These can be integrated in the device or placed outside the device (clear view arrangement).
  • defined lighting conditions are possible in order to record the behavior of the optical system to be examined under different lighting conditions.
  • it is possible in particular to determine the ametropia for day and night vision.
  • It is also advantageous to integrate a measuring system for determining the pupil diameter under different lighting conditions of the optical system.
  • the invention it is also possible to carry out the determination of the ametropia of the human eye in a binocular manner. This can be done simultaneously, alternately or sequentially, for example. It is advantageous to choose the binolular verge angle in accordance with the distance of the fixation target in order to create the most realistic visual conditions possible.
  • the invention further comprises the determination of a criterion in which the expected deviation of a purely subjective as compared to the objective determination of ametropia is determined.
  • a confidence measure is preferably determined, which can be derived from the accommodation behavior of the optical system to be examined during the measurement and / or from the magnitude of the higher order aberrations absolutely or relative to the measure of the lower orders. For example, this number can be used to define an indicator that indicates whether a further purely subjective determination of the ametropia of the optical system is additionally required.
  • a desired correction of the ametropia thus determined is achieved, among other things, by glasses of different complexity, such as purely spherical, aspherical, with cylinder and / or astigmatism correction or by correcting further higher orders.
  • Other options include the use of contact lenses or intraocular lenses as well as various laser correction options such as LASIK, LASEK, PRK, LTKP and the use of fs lasers. It is advantageous according to the invention to use the controllable optical element during the determination of the ametropia to correct it only as far as the desired correction option allows.
  • the beam path of a treatment laser or an illumination system for diagnostic or therapeutic purposes is additionally reflected in the beam path of the device.
  • the changeable optical element is, for example, a contact lens, an intraocular lens or directly the cornea and / or the lens of the eye to be treated.
  • the optical properties of the optical system are changed by the treatment laser by means of ablation or disruption or by an illumination system with the aid of thermal or photochemical effects.
  • a device which is constructed such that the ametropia of an optical system can be objectively detected and / or adjusted by means of at least one controllable optical element, at least one measuring and control device, the device further comprising means Allow subjective change of the determined values.
  • the problem mentioned at the outset is also solved by a method for determining the ametropia of an optical system with a device comprising a controllable optical element and a measuring and control device, the controllable optical element being set by the measuring and control device in a first method step that the ametropia of the optical system is compensated. It is particularly advantageous if the controllable optical element is manually set by the patient in a further method step in order to achieve a subjectively optimal compensation of the ametropia.
  • FIG. 1 shows a sketch of a first embodiment of the device according to the invention
  • FIG. 2 shows a sketch of a second embodiment of the device according to the invention
  • Fig. 3 is a sketch of a third embodiment of the device according to the invention.
  • FIG. 1 An eye 1 of a patient looks through a controllable optical element 2 and through a beam splitter 4 at a visual sample 5.
  • the human eye 1 to be examined can, for example, with additional visual aids such as a contact lens or the like and is therefore referred to as optical system 1 for the further description.
  • the controllable optical element 2 can be, for example, an electrically controlled phoropter.
  • the beam path of a preferably automatic refractometer or aberrometer is reflected by means of the beam splitter 4. This is referred to below as measuring and control device 3.
  • the measuring radiation of the measuring and control device 3 and the mirroring of the beam splitter 4 are expediently in the infrared range, so that a patient cannot recognize this radiation and only perceives the visual sample 5.
  • the measuring and control device 3 comprises an automatic refractometer or aberrometer 3.1, the measurement signals of which are processed via a processor 3.2 and a control device 3.3 such that they control a drive 7 of the controllable optical element 2. This almost compensates for the ametropia of the optical system 1.
  • the control device 3.3 can additionally be operated via a manual control 3.4. Using the manual control 3.4, the patient can make a subjective post-correction according to the visual test 5 seen. The final correction values for an eyeglass prescription can be taken from a data output 8.
  • Fig. 2 shows schematically an extended embodiment.
  • the controllable optical element 2 is here a contact lens, intraocular lens or phase plate, the refractive power of which is changed by material removal by means of spatially and energetically controlled laser radiation until the ametropia of the patient's eye is compensated objectively and subjectively.
  • the radiation from a laser 6 is reflected into the beam path by means of a second beam splitter 9.
  • the structure and function of the control loop otherwise correspond to the embodiment shown in FIG. 1.
  • FIG. 3 shows a third embodiment of the device according to the invention, in which the controllable optical element 2 is the cornea of the patient himself compared to the embodiment shown in FIG. 2.
  • the controllable optical element 2 is the cornea of the patient himself compared to the embodiment shown in FIG. 2.
  • an immediate correction of the cornea is carried out after the objectively measured correction using known removal methods such as e.g. PRK, Lasik or Lasek performed. Immediate subjective control of the eyesight is not possible here, so instead of a visual sample 5, an insight 10 is provided for observing the eye.
  • the measurement beam path is viewed in the direction of the eye in front of the controllable optical element 2, this is done together with the defective eye measured as an overall system.
  • the feedback of the measurement and control signal to the changeable or controllable optical element 2 results in a closed control loop which adjusts the signal to zero.
  • Remaining imaging errors of the system eye correction element for example imaging errors due to accommodation, are displayed and can be analyzed and taken into account if necessary. This also applies to the prescription of reading glasses if there is a corresponding distance between the visual samples. If the measurement system is reflected in the direction of the eye after the controllable optical element 2, only the optical system of the eye is measured, the signal is retained and controls the controllable optical element 2 for the pre-calculated compensation of the ametropia.
  • the controllable optical element 2 can be a controllable phoropter or a lens or mirror system, e.g. be an optometer and astigmeter.
  • controllable material processing lasers e.g. an excimer laser
  • individually adjusted corrections are also to be carried out, for example using specially manufactured spectacle lenses (phase plates) or contact lenses or direct ablation of the cornea, which may have arisen as a result of a wavefront analysis.
  • the laser is controlled by the measuring system online or offline for processing.
  • the device according to FIG. 1 is provided with an additional reflection according to FIG. 2. It is physically and technically possible to follow the effect of corneal ablation in real time, but not subjectively by the patient at the current state of the surgical technique.

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  • 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 et un procédé pour la détermination de l'erreur de réfraction d'un système optique (1), qui comprend un élément optique (2) commandé. Grâce à l'invention, la détermination objective et la détermination subjective des valeurs de correction sont plus fortement associées par le fait qu'un dispositif de mesure et de commande (3) forme, avec l'élément optique (2) commandé, une boucle d'asservissement et que les propriétés optiques de l'élément optique (2) commandé peuvent être réglées manuellement.
EP04740327A 2003-06-27 2004-06-25 Dispositif et procede pour la determination de l'erreur de refraction d'un systeme optique Ceased EP1641382A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10329165A DE10329165A1 (de) 2003-06-27 2003-06-27 Vorrichtung zur Bestimmung der Fehlsichtigkeit eines optischen Systems
PCT/EP2004/006918 WO2005000112A1 (fr) 2003-06-27 2004-06-25 Dispositif et procede pour la determination de l'erreur de refraction d'un systeme optique

Publications (1)

Publication Number Publication Date
EP1641382A1 true EP1641382A1 (fr) 2006-04-05

Family

ID=33521138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740327A Ceased EP1641382A1 (fr) 2003-06-27 2004-06-25 Dispositif et procede pour la determination de l'erreur de refraction d'un systeme optique

Country Status (4)

Country Link
US (1) US7673992B2 (fr)
EP (1) EP1641382A1 (fr)
DE (2) DE10329165A1 (fr)
WO (1) WO2005000112A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005473B4 (de) * 2005-02-01 2009-06-18 Kurt Heiberger Vorrichtung zum Messen und zur chirurgischen Korrektur von Abbildungsfehlern im menschlichen Auge
DE102005046141A1 (de) * 2005-09-27 2007-04-05 Iroc Ag Gerät für binokulare Visusprüfung
WO2013096775A1 (fr) * 2011-12-21 2013-06-27 The Arizona Board Of Regents On Behalf Of The University Of Arizona Réfracteur holographique binoculaire transparent adaptatif
US9681800B2 (en) * 2005-10-27 2017-06-20 The Arizona Board Of Regents On Behalf Of The University Of Arizona Holographic adaptive see-through phoropter
US8313828B2 (en) * 2008-08-20 2012-11-20 Johnson & Johnson Vision Care, Inc. Ophthalmic lens precursor and lens
US8317505B2 (en) 2007-08-21 2012-11-27 Johnson & Johnson Vision Care, Inc. Apparatus for formation of an ophthalmic lens precursor and lens
US7905594B2 (en) * 2007-08-21 2011-03-15 Johnson & Johnson Vision Care, Inc. Free form ophthalmic lens
US8318055B2 (en) 2007-08-21 2012-11-27 Johnson & Johnson Vision Care, Inc. Methods for formation of an ophthalmic lens precursor and lens
US8333474B2 (en) * 2007-10-19 2012-12-18 Wavetec Vision Systems, Inc. Optical instrument alignment system
US9417464B2 (en) 2008-08-20 2016-08-16 Johnson & Johnson Vision Care, Inc. Method and apparatus of forming a translating multifocal contact lens having a lower-lid contact surface
US8240849B2 (en) * 2009-03-31 2012-08-14 Johnson & Johnson Vision Care, Inc. Free form lens with refractive index variations
US8807076B2 (en) 2010-03-12 2014-08-19 Johnson & Johnson Vision Care, Inc. Apparatus for vapor phase processing ophthalmic devices
EP2371270A1 (fr) * 2010-03-16 2011-10-05 Ignaz Alois Stuetz Procédé de compensation et de simulation de la distorsion d'image (anamorphique)
DE102011001083B4 (de) * 2011-03-04 2015-11-05 Eyesight & Vision Gmbh Projektorvorrichtung mit Selbstkorrekturfunktion sowie Medizingerät mit der Projektorvorrichtung
US9895058B2 (en) 2011-03-25 2018-02-20 Carl Zeiss Meditec Ag Heads-up vision analyzer
US9645412B2 (en) 2014-11-05 2017-05-09 Johnson & Johnson Vision Care Inc. Customized lens device and method
JP2016220880A (ja) * 2015-05-29 2016-12-28 株式会社トプコン 検眼装置
US10359643B2 (en) 2015-12-18 2019-07-23 Johnson & Johnson Vision Care, Inc. Methods for incorporating lens features and lenses having such features
US11364696B2 (en) 2020-09-18 2022-06-21 Johnson & Johnson Vision Care, Inc Apparatus for forming an ophthalmic lens

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1955859C3 (de) * 1969-11-06 1982-04-08 Fa. Carl Zeiss, 7920 Heidenheim Vorrichtung zur Ermittlung des Refraktionszustandes eines Auges
US4105302A (en) * 1976-06-23 1978-08-08 Tate Jr George W Automatic refraction apparatus and method
DE19620326C1 (de) * 1996-05-21 1997-10-09 Preusner Paul Rolf Dipl Phys D Elektromotorisch betriebener Phoropter
US6491394B1 (en) * 1999-07-02 2002-12-10 E-Vision, Llc Method for refracting and dispensing electro-active spectacles
US6511180B2 (en) * 2000-10-10 2003-01-28 University Of Rochester Determination of ocular refraction from wavefront aberration data and design of optimum customized correction
WO2003041609A2 (fr) * 2001-11-09 2003-05-22 Wavefront Sciences, Inc. Systeme et procede pour realiser une intervention de correction optique par retroaction en temps reel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005000112A1 *

Also Published As

Publication number Publication date
DE112004001005D2 (de) 2006-03-30
US7673992B2 (en) 2010-03-09
DE10329165A1 (de) 2005-01-13
US20080192201A1 (en) 2008-08-14
WO2005000112A1 (fr) 2005-01-06

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