CA2417776A1 - Method for determining distances in the anterior ocular segment - Google Patents

Method for determining distances in the anterior ocular segment Download PDF

Info

Publication number
CA2417776A1
CA2417776A1 CA002417776A CA2417776A CA2417776A1 CA 2417776 A1 CA2417776 A1 CA 2417776A1 CA 002417776 A CA002417776 A CA 002417776A CA 2417776 A CA2417776 A CA 2417776A CA 2417776 A1 CA2417776 A1 CA 2417776A1
Authority
CA
Canada
Prior art keywords
eye
pupil
iris
center
basis
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.)
Granted
Application number
CA002417776A
Other languages
French (fr)
Other versions
CA2417776C (en
Inventor
Roland Bergner
Roland Barth
Axel Doering
Frank Behrendt
Klaus-Ditmar Voigt
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.)
Jenoptik AG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2417776A1 publication Critical patent/CA2417776A1/en
Application granted granted Critical
Publication of CA2417776C publication Critical patent/CA2417776C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61B3/10—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
    • 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
    • A61B3/1005—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring distances inside the eye, e.g. thickness of the cornea
    • 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
    • A61B3/11—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils
    • A61B3/112—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils for measuring diameter of pupils

Abstract

The invention relates to a method for determining distances in the anterior ocular segment, preferably of the pupils and/or the diameter of the iris, wherein the image of at least part of the eye is recorded and digitized using an imaging device and an array for illuminating the eye. On the basis of said digital image, a center of gravity analysis and the determination of the central point are carried out, especially for the position of the pupils, by conducting an intensity and threshold analysis as rough determination. Based on said rough determination, a fine detection of the position of the edges of the pupil and/or the edges of the iris is carried out. Additionally, the angle between the visual axis and the optical axis of the eye can be determined from the position of a fixed reflection to the center of the pupil and/or the center of the iris.

Claims (5)

1. A method for determining distances in the anterior ocular segment, preferably a pupil diameter and/or an iris diameter, wherein the image of at least part of an eye is captured and digitized using an image-capturing unit and an arrangement for illumination of the eye, and, on the basis of said digitized image, a centroid analysis and a center determination is effected as a rough determination via an intensity threshold analysis, in particular with respect to a position of the pupil, and a fine detection of the position of pupil edges and/or of iris edges is effected on the basis of such rough determination.
2. A method for determining the visual axis, wherein the intersection point of a visual axis through the cornea is determined using a fixation light.
3. The method as claimed in Claim 1, wherein, in addition, the intersection point of a visual axis through the cornea of the eye relative to the pupil and/or the iris is determined on the basis of the position of a fixation reflection.
4. The method as claimed in any one of Claims 1 to 3, wherein the angle between the visual axis and the optical axis of the eye is determined on the basis of the position of a fixation reflection relative to the pupil center and/or the iris center.
5. The method as claimed in Claim 4, wherein an instrument for interferometric measurement of the segments of the human eye is preadjusted along the optical axis of said eye using said angle.
CA2417776A 2001-02-21 2002-02-16 Method for determining distances in the anterior ocular segment Expired - Fee Related CA2417776C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10108797A DE10108797A1 (en) 2001-02-21 2001-02-21 Procedure for determining distances at the anterior segment of the eye
DE10108797.7 2001-02-21
PCT/EP2002/001675 WO2002065899A2 (en) 2001-02-21 2002-02-16 Method for determining distances in the anterior ocular segment

Publications (2)

Publication Number Publication Date
CA2417776A1 true CA2417776A1 (en) 2002-08-29
CA2417776C CA2417776C (en) 2012-06-12

Family

ID=7675271

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2417776A Expired - Fee Related CA2417776C (en) 2001-02-21 2002-02-16 Method for determining distances in the anterior ocular segment

Country Status (12)

Country Link
US (1) US7284858B2 (en)
EP (2) EP1303210B1 (en)
JP (1) JP4250685B2 (en)
KR (1) KR100917240B1 (en)
AT (1) ATE418907T1 (en)
CA (1) CA2417776C (en)
CZ (1) CZ20031797A3 (en)
DE (2) DE10108797A1 (en)
HU (1) HUP0300839A2 (en)
IL (1) IL152395A (en)
MX (1) MXPA03002692A (en)
WO (1) WO2002065899A2 (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108797A1 (en) * 2001-02-21 2002-09-05 Zeiss Carl Jena Gmbh Procedure for determining distances at the anterior segment of the eye
DE10250569A1 (en) 2002-10-28 2004-05-13 Carl Zeiss Meditec Ag Ophthalmic device and device positioning method
DE10250570A1 (en) * 2002-10-28 2004-05-13 Carl Zeiss Meditec Ag Ophthalmic device and device positioning method
DE10304185B4 (en) * 2003-01-28 2010-12-30 Carl Zeiss Vision Gmbh Apparatus and method for adjusting a position of a spectacle lens relative to the position of a pupil
DE10323920A1 (en) 2003-05-22 2004-12-16 Carl Zeiss Meditec Ag Method and arrangement for measuring the anterior segment of the eye
DE10333794A1 (en) 2003-07-24 2005-03-03 Technovision Gmbh Method and device for online contact lens evaluation
DE20313745U1 (en) 2003-09-02 2003-11-20 Oculus Optikgeraete Gmbh Ophthalmological analysis system
JP4088282B2 (en) * 2004-08-20 2008-05-21 清実 中村 Computer input method and apparatus
DE102006053098A1 (en) 2006-11-10 2008-05-15 Carl Zeiss Meditec Ag Ophthalmological device for contacting therapy process i.e. femto-second Laser treatment, has detection device holding eye of patient on suspension device and determining indication about relative shift of suspension device
GB0713461D0 (en) * 2007-07-11 2007-08-22 Ct Meter Ltd Device and methods for obtaining measurements for spectacles fitting
ES2528651T3 (en) 2007-09-05 2015-02-11 Alcon Lensx, Inc. Laser induced protection screen in laser surgery
US9456925B2 (en) 2007-09-06 2016-10-04 Alcon Lensx, Inc. Photodisruptive laser treatment of the crystalline lens
US20090103048A1 (en) * 2007-10-17 2009-04-23 Omron Silicon Valley Method and system for pupil detection
JP5198831B2 (en) * 2007-11-02 2013-05-15 株式会社ニデック Eye size measuring device
WO2009059251A2 (en) * 2007-11-02 2009-05-07 Lensx Lasers, Inc. Methods and apparatus for improved post-operative ocular optical peformance
US8128228B2 (en) * 2007-12-19 2012-03-06 Wf Systems Llc Devices and methods for measuring axial distances
US8662667B2 (en) * 2007-12-21 2014-03-04 Carl Zeiss Meditec Ag Ophthalmologic visualization system
DE102007055921A1 (en) 2007-12-21 2009-06-25 Carl Zeiss Surgical Gmbh Method for determining properties or determining and / or tracking the position of the center of characteristic eye components
DE102007055919B4 (en) 2007-12-21 2023-08-10 Carl Zeiss Meditec Ag Eye viewing system and method therefor
DE102007055924B4 (en) 2007-12-21 2009-11-26 Carl Zeiss Surgical Gmbh Method for determining characteristic properties and / or the position of characteristic ocular components
DE102007055923A1 (en) 2007-12-21 2009-06-25 Carl Zeiss Surgical Gmbh Method for determining properties and / or the position of characteristic ocular components
DE102007055922A1 (en) 2007-12-21 2009-06-25 Carl Zeiss Surgical Gmbh Method for determining properties and / or the position of characteristic ocular components
DE112009000064T5 (en) 2008-01-09 2010-11-04 LenSx Lasers, Inc., Aliso Viejo Photodisruptive laser fragmentation of tissue
US8308298B2 (en) * 2009-06-24 2012-11-13 Carl Zeiss Meditec Ag Microscopy system for eye surgery
DE102009033931B4 (en) 2009-07-20 2016-03-10 Carl Zeiss Meditec Ag Method for determining a change in size and / or positional change of an annular component of an eye in an image
DE102010047053A1 (en) 2010-09-29 2012-03-29 Carl Zeiss Meditec Ag Method and device for the interferometric determination of different biometric parameters of an eye
DE102010051281A1 (en) 2010-11-12 2012-05-16 Carl Zeiss Meditec Ag Method for the model-based determination of the biometry of eyes
DE102011106288A1 (en) 2011-07-01 2013-01-03 Carl Zeiss Meditec Ag Device for non-contact measurement of eye parameters
DE102015008217A1 (en) * 2015-06-29 2016-12-29 Precitec Optronik Gmbh Method and device for determining the position and position of an eye
JP6790479B2 (en) * 2016-06-15 2020-11-25 富士ゼロックス株式会社 Eye light measuring device
US10182755B2 (en) 2017-01-06 2019-01-22 Jacques Ohayon Pupil distortion measurement and psychiatric diagnosis method
DE102018200829A1 (en) * 2018-01-19 2019-07-25 Carl Zeiss Meditec Ag Method for the continuous control of the fixation of a patient's eye during the acquisition of its biometric measurement data
EP4098176A1 (en) 2021-06-01 2022-12-07 Wavesense Engineering GmbH Optical apparatus
CN113643371B (en) * 2021-10-13 2022-01-25 中国空气动力研究与发展中心低速空气动力研究所 Method for positioning aircraft model surface mark points

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319564A (en) 1980-01-03 1982-03-16 Karickhoff John R Instrument for measurement of the diameter of the anterior chamber of the eye
US4398812A (en) 1980-06-18 1983-08-16 Kelman Charles D Apparatus and method for measuring the anterior chamber diameter of the eye
US4812033A (en) * 1985-02-26 1989-03-14 Canon Kabushiki Kaisha Ophthalmic apparatus
US5291234A (en) 1987-02-04 1994-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Auto optical focus detecting device and eye direction detecting optical system
JP2666142B2 (en) 1987-02-04 1997-10-22 旭光学工業株式会社 Automatic focus detection device for camera
US5327191A (en) * 1987-06-11 1994-07-05 Asahi Kogaku Kogyo Kabushiki Kaisha Eye direction detecting apparatus
JP2950546B2 (en) * 1988-08-31 1999-09-20 キヤノン株式会社 Eye gaze detecting device and camera having eye gaze detecting device
US5071245A (en) * 1988-12-06 1991-12-10 Kabushiki Kaisha Topcon Ocular refracting power measuring system
US5231674A (en) * 1989-06-09 1993-07-27 Lc Technologies, Inc. Eye tracking method and apparatus
JP2787488B2 (en) * 1989-11-28 1998-08-20 旭光学工業株式会社 Eye gaze detection device
US5187506A (en) 1990-09-28 1993-02-16 Fairville Medical Optics Inc. Method and apparatus for determining physiological parameters based on pupil response
JP3289953B2 (en) * 1991-05-31 2002-06-10 キヤノン株式会社 Gaze direction detection device
JPH05168597A (en) * 1991-12-20 1993-07-02 Topcon Corp Fundus camera
JP3214057B2 (en) * 1992-04-14 2001-10-02 キヤノン株式会社 Pupil center detection method, pupil center detection device, pupil limbus detection method, and pupil limbus detection device
US6035054A (en) * 1992-10-29 2000-03-07 Canon Kabushiki Kaisha Visual axis detection apparatus and optical apparatus provided therewith
JP3417602B2 (en) * 1993-06-23 2003-06-16 株式会社トプコン Ophthalmic measurement device
US5474548A (en) * 1993-07-14 1995-12-12 Knopp; Carl F. Method of establishing a unique machine independent reference frame for the eye
US6419638B1 (en) * 1993-07-20 2002-07-16 Sam H. Hay Optical recognition methods for locating eyes
JPH06277182A (en) * 1993-11-12 1994-10-04 Canon Inc Optometric apparatus
JP3356340B2 (en) 1993-12-20 2002-12-16 浜松ホトニクス株式会社 Pupil area measuring device
US5491757A (en) * 1993-12-22 1996-02-13 Humphrey Instruments, Inc. Field tester gaze tracking using content addressable memories to improve image data analysis speed
JPH07199042A (en) * 1993-12-28 1995-08-04 Canon Inc Camera provided with sight-line detecting function
JP3293308B2 (en) 1994-03-10 2002-06-17 三菱電機株式会社 Person state detection device
US5797046A (en) * 1994-03-23 1998-08-18 Canon Kabushiki Kaisha Visual axis controllable optical apparatus including a visual axis detecting device for detecting a visual axis
JP3352238B2 (en) * 1994-07-26 2002-12-03 キヤノン株式会社 Eye gaze detection device and camera
JP3453911B2 (en) 1995-03-02 2003-10-06 富士ゼロックス株式会社 Gaze recognition device
US5913079A (en) * 1995-07-31 1999-06-15 Canon Kabushiki Kaisha Optical apparatus having a line of sight detection device
US5887200A (en) * 1995-07-31 1999-03-23 Canon Kabushiki Kaisha Line of sight detection device and apparatus having the line of sight detection device
JP3404638B2 (en) * 1995-10-09 2003-05-12 日本光電工業株式会社 Goggles for eye surface measurement and eye surface measurement device
JPH09192101A (en) * 1996-01-12 1997-07-29 Canon Inc Eye measurement device
DE19618883A1 (en) 1996-05-10 1997-11-20 Jurca Optoelektronik Gmbh Device and method for the photorefractive correction of ametropia
JP3436293B2 (en) 1996-07-25 2003-08-11 沖電気工業株式会社 Animal individual identification device and individual identification system
JPH1057319A (en) 1996-08-19 1998-03-03 Konan:Kk Ophthalmologic imaging apparatus
DE19649542C2 (en) * 1996-10-11 1999-06-17 Univ Eberhard Karls Method of measuring a pupil
US5790235A (en) 1997-03-26 1998-08-04 Carl Zeiss, Inc. Method and apparatus to measure pupil size and position
JPH11155152A (en) * 1997-11-21 1999-06-08 Canon Inc Method and system for three-dimensional shape information input, and image input device thereof
CN100502762C (en) * 1998-12-10 2009-06-24 卡尔蔡斯耶拿有限公司 Combined instruments for non-contacting measurement of the axis length and cornea curvature of eye
US6322216B1 (en) * 1999-10-07 2001-11-27 Visx, Inc Two camera off-axis eye tracker for laser eye surgery
US20020049431A1 (en) * 2000-10-20 2002-04-25 Smith Michael J. Method of correcting corneal refraction not aligned with the pupil center
DE10108797A1 (en) * 2001-02-21 2002-09-05 Zeiss Carl Jena Gmbh Procedure for determining distances at the anterior segment of the eye

Also Published As

Publication number Publication date
IL152395A (en) 2010-05-17
WO2002065899A3 (en) 2003-01-03
US7284858B2 (en) 2007-10-23
EP2042078A2 (en) 2009-04-01
MXPA03002692A (en) 2004-12-03
ATE418907T1 (en) 2009-01-15
EP2042078A3 (en) 2009-04-08
CA2417776C (en) 2012-06-12
DE10108797A1 (en) 2002-09-05
US20040070728A1 (en) 2004-04-15
JP2004518497A (en) 2004-06-24
JP4250685B2 (en) 2009-04-08
CZ20031797A3 (en) 2003-11-12
IL152395A0 (en) 2003-05-29
KR100917240B1 (en) 2009-09-16
KR20020093935A (en) 2002-12-16
WO2002065899A2 (en) 2002-08-29
EP1303210B1 (en) 2008-12-31
DE50213161D1 (en) 2009-02-12
EP1303210A2 (en) 2003-04-23
EP2042078B1 (en) 2013-04-03
HUP0300839A2 (en) 2003-08-28

Similar Documents

Publication Publication Date Title
CA2417776A1 (en) Method for determining distances in the anterior ocular segment
JP5026741B2 (en) Operation method of ophthalmic examination apparatus
JP3298640B2 (en) Gaze tracking for visual field analyzers
US20140375951A1 (en) System and method for the non-contacting measurements of the eye
JP6966737B2 (en) Small removable microscope-mounted keratometer for cataract surgery
JPH08278134A (en) Devcie for measuring position of fixed point of eye on target,method for lighting eye and application for displaying image that is changing in correspondence with movement of eye
HK1049435A1 (en) Wavefront sensor with off-axis illumination
EP1364612A1 (en) Eye characteristics measuring device
EP0659382A3 (en) Improvements in field tester gaze tracking
CA2990524C (en) Purkinje meter and method for automatic evaluation
EP1057446B1 (en) Corneal shape measuring apparatus
JP2005230328A (en) Ophthalmological apparatus
KR102130310B1 (en) Optometer
US8965065B2 (en) Method and device for determining various biometric parameters of an eye by interferometry
JP2004113755A (en) Visual point detection camera and visual point automatic analyzing apparatus
JPH0123133B2 (en)
JPH05146405A (en) Ophthalmic refracting power measuring instrument
JPH05115438A (en) Ophthalmic device
JP2835375B2 (en) Optometry device
JPH11318826A (en) Opthalmoscope
JPH02289227A (en) Measuring device for ophthalmology
Yoder Jr et al. Precision measurement of corneal topography
JPH0654810A (en) Ophthalmological measuring instrument
JP2004159732A (en) Optometer
JPH09192097A (en) Ophthalmologic apparatus

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20200217