FR2364018A1 - Procede et dispositif pour mesurer automatiquement la courbure de la cornee - Google Patents

Procede et dispositif pour mesurer automatiquement la courbure de la cornee

Info

Publication number
FR2364018A1
FR2364018A1 FR7727411A FR7727411A FR2364018A1 FR 2364018 A1 FR2364018 A1 FR 2364018A1 FR 7727411 A FR7727411 A FR 7727411A FR 7727411 A FR7727411 A FR 7727411A FR 2364018 A1 FR2364018 A1 FR 2364018A1
Authority
FR
France
Prior art keywords
curvature
automatically measuring
horna
cornea
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.)
Withdrawn
Application number
FR7727411A
Other languages
English (en)
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.)
Battelle Institut eV
Original Assignee
Battelle Institut eV
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 Battelle Institut eV filed Critical Battelle Institut eV
Publication of FR2364018A1 publication Critical patent/FR2364018A1/fr
Withdrawn legal-status Critical Current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
    • A61B3/107—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining the shape or measuring the curvature of the cornea

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

a. L'invention concerne un procédé et un dispositif pour mesurer automatiquement la courbure de la cornée. b. Le procédé est caractérisé en ce qu'on produit des points d'objet sur un support ayant la forme d'une surface cohérente, et on mesure leurs reflets sur la surface avant de la cornée, par rapport à l'axe optique au moyen d'une optique de télescope et d'un détecteur sensible à la localisation. c. L'invention est applicable aux mesures automatiques de courbure de la cornée.
FR7727411A 1976-09-11 1977-09-09 Procede et dispositif pour mesurer automatiquement la courbure de la cornee Withdrawn FR2364018A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2641004A DE2641004C2 (de) 1976-09-11 1976-09-11 Vorrichtung zur Messung der Hornhautkrümmung

Publications (1)

Publication Number Publication Date
FR2364018A1 true FR2364018A1 (fr) 1978-04-07

Family

ID=5987713

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727411A Withdrawn FR2364018A1 (fr) 1976-09-11 1977-09-09 Procede et dispositif pour mesurer automatiquement la courbure de la cornee

Country Status (4)

Country Link
US (1) US4159867A (fr)
DE (1) DE2641004C2 (fr)
FR (1) FR2364018A1 (fr)
GB (1) GB1563286A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416000A1 (fr) * 1978-02-07 1979-08-31 Rodenstock Optik G Phototopometre pour l'examen de l'oeil
FR2497087A1 (fr) * 1980-12-30 1982-07-02 Essilor Int Keratometre automatique
FR2533815A1 (fr) * 1982-10-04 1984-04-06 Mo I Glaznykh Bole Procede de determination de la topographie de la surface de la cornee de l'oeil et dispositif pour sa mise en oeuvre

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875531A (ja) * 1981-10-28 1983-05-07 株式会社トプコン 曲率測定装置
US4440477A (en) * 1981-10-30 1984-04-03 Schachar Ronald A Method and device for measuring the optical power of the cornea
GB2123977B (en) * 1982-07-03 1986-04-16 Smith & Nephew Ass Ophthalmic test apparatus
US4666269A (en) * 1982-08-09 1987-05-19 Canon Kabushiki Kaisha Ophthalmologic apparatus
US4569576A (en) * 1982-08-31 1986-02-11 Moskovsky Nauchno-Issledovatelsky Institut Glaznykh Boleznei Imeni Gelmgoltsa Method and device for determining cornea surface topography
GB2126745B (en) * 1982-09-02 1986-07-23 Mo Nauchno Issledovatelskyinst Method and device for determining cornea surface topography
US4530579A (en) * 1983-09-06 1985-07-23 Hyde Lawrence L Astigmatic ruler and method of use thereof
US4925293A (en) * 1984-10-04 1990-05-15 Hurd William C Intraocular biometer for a slit lamp
US4662730A (en) * 1984-10-18 1987-05-05 Kerascan, Inc. Scanning keratometers
US4761071A (en) * 1984-11-06 1988-08-02 Baron William S Apparatus and method for determining corneal and scleral topography
JPS62290435A (ja) * 1986-06-09 1987-12-17 キヤノン株式会社 角膜形状測定装置
US4998819A (en) * 1987-11-25 1991-03-12 Taunton Technologies, Inc. Topography measuring apparatus
US4902123A (en) * 1987-11-25 1990-02-20 Taunton Technologies, Inc. Topography measuring apparatus
US5106183A (en) * 1987-11-25 1992-04-21 Taunton Technologies, Inc. Topography measuring apparatus
US5585873A (en) * 1991-10-11 1996-12-17 Alcon Laboratories, Inc. Automated hand-held keratometer
GB9205655D0 (en) * 1992-03-14 1992-04-29 Roke Manor Research Improvements in or relating to surface curvature measurement
EP0561178B1 (fr) * 1992-03-14 1997-10-29 Roke Manor Research Limited Mesure de la curvature d'une surface
JPH08505551A (ja) * 1993-01-21 1996-06-18 テヒノメッド・ゲゼルシャフト・フュール・メディツィニッシェ・ウント・メディツィニッシュ‐テヒニッシェ・ジステメ・ミト・ベシュレンクテル・ハフツング 反射表面の形態を測定する方法と装置
DE19538567A1 (de) * 1995-10-17 1997-04-24 Oculus Optikgeraete Gmbh Vorrichtung für die topographische Vermessung einer Oberfläche
US6079831A (en) * 1997-04-24 2000-06-27 Orbtek, Inc. Device and method for mapping the topography of an eye using elevation measurements in combination with slope measurements
US5864383A (en) * 1997-04-24 1999-01-26 Orbtek, Inc. Single-curvature placido plate
US6575573B2 (en) 2001-10-17 2003-06-10 Carl Zeiss Ophthalmic Systems, Inc. Method and apparatus for measuring a corneal profile of an eye
CA2687100C (fr) 2007-05-11 2016-04-12 Charles E. Campbell Systemes de front d'onde et de topographie combines et procedes
US7988290B2 (en) * 2007-06-27 2011-08-02 AMO Wavefront Sciences LLC. Systems and methods for measuring the shape and location of an object
US7976163B2 (en) 2007-06-27 2011-07-12 Amo Wavefront Sciences Llc System and method for measuring corneal topography
US7988293B2 (en) * 2008-11-14 2011-08-02 AMO Wavefront Sciences LLC. Method of qualifying light spots for optical measurements and measurement instrument employing method of qualifying light spots
US8622546B2 (en) 2011-06-08 2014-01-07 Amo Wavefront Sciences, Llc Method of locating valid light spots for optical measurement and optical measurement instrument employing method of locating valid light spots
CN110151122A (zh) * 2019-05-10 2019-08-23 广东唯仁医疗科技有限公司 一种oct成像装置螺旋扫描方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542458A (en) * 1968-03-05 1970-11-24 David Volk Method for measurement of the shape and curvature of a cornea
US3609017A (en) * 1970-05-21 1971-09-28 Benjamin Nuchman Means for extending the range of keratometers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183519A (en) * 1960-07-01 1965-05-11 Te Company System for optically determining curvature of an object
US3169459A (en) * 1963-03-11 1965-02-16 Michael A Friedberg Method of determining surface contours of an eye
US3453437A (en) * 1967-04-17 1969-07-01 Univ California Automatic photoelectric keratometer utilizing a cathode ray tube sweep circuit which is symmetrically triggered by light from extremities of the measured surface
DE2053623A1 (de) * 1970-10-31 1972-05-10 Wesley-Jessen Inc., Chicago, 111. (V.Si.A.) Vorrichtung zur Bestimmung der Corneakontur
US4046463A (en) * 1974-07-17 1977-09-06 Surgical Microsystems, Inc. Indicating an asphericity of the cornea of an eye

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542458A (en) * 1968-03-05 1970-11-24 David Volk Method for measurement of the shape and curvature of a cornea
US3609017A (en) * 1970-05-21 1971-09-28 Benjamin Nuchman Means for extending the range of keratometers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416000A1 (fr) * 1978-02-07 1979-08-31 Rodenstock Optik G Phototopometre pour l'examen de l'oeil
FR2497087A1 (fr) * 1980-12-30 1982-07-02 Essilor Int Keratometre automatique
FR2533815A1 (fr) * 1982-10-04 1984-04-06 Mo I Glaznykh Bole Procede de determination de la topographie de la surface de la cornee de l'oeil et dispositif pour sa mise en oeuvre

Also Published As

Publication number Publication date
DE2641004A1 (de) 1978-03-16
US4159867A (en) 1979-07-03
GB1563286A (en) 1980-03-26
DE2641004C2 (de) 1981-12-17

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Legal Events

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ST Notification of lapse