FR2248814A1 - Internal eye examination instrument - has illuminating optical fibres bearing against annular surface of cornea - Google Patents

Internal eye examination instrument - has illuminating optical fibres bearing against annular surface of cornea

Info

Publication number
FR2248814A1
FR2248814A1 FR7338529A FR7338529A FR2248814A1 FR 2248814 A1 FR2248814 A1 FR 2248814A1 FR 7338529 A FR7338529 A FR 7338529A FR 7338529 A FR7338529 A FR 7338529A FR 2248814 A1 FR2248814 A1 FR 2248814A1
Authority
FR
France
Prior art keywords
cornea
optical fibres
lens
bearing against
annular surface
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Withdrawn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
FR7338529A
Other languages
French (fr)
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.)
DUDRAGNE RAYMOND FR
Original Assignee
DUDRAGNE RAYMOND FR
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 DUDRAGNE RAYMOND FR filed Critical DUDRAGNE RAYMOND FR
Priority to FR7338529A priority Critical patent/FR2248814A1/en
Publication of FR2248814A1 publication Critical patent/FR2248814A1/en
Withdrawn legal-status Critical Current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
    • A61B3/117—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
    • 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

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

Optical fibres providing illumination bear against the cornea surface on a flat annular zone halfways between the cornea tip and the plane of the iris at less than 15 deg. A thick lens system has an inner concave face bearing against the front cornea surface, with a heavily curved lens having a refractive index greater than 1.65. The thickness of the lens system is greater than the radius of curvature at the apex of the external convex lens face. The external face of the heavily curved lens can be spherical, and the field illuminated by the optical fibres can be limited so there is no light leakage to the front of the cornea against which the lens bears.
FR7338529A 1973-10-29 1973-10-29 Internal eye examination instrument - has illuminating optical fibres bearing against annular surface of cornea Withdrawn FR2248814A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7338529A FR2248814A1 (en) 1973-10-29 1973-10-29 Internal eye examination instrument - has illuminating optical fibres bearing against annular surface of cornea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7338529A FR2248814A1 (en) 1973-10-29 1973-10-29 Internal eye examination instrument - has illuminating optical fibres bearing against annular surface of cornea

Publications (1)

Publication Number Publication Date
FR2248814A1 true FR2248814A1 (en) 1975-05-23

Family

ID=9127075

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7338529A Withdrawn FR2248814A1 (en) 1973-10-29 1973-10-29 Internal eye examination instrument - has illuminating optical fibres bearing against annular surface of cornea

Country Status (1)

Country Link
FR (1) FR2248814A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387020A1 (en) * 1977-04-15 1978-11-10 Zeiss Carl Fa OPTICAL SYSTEM FOR THE EXAMINATION OF THE RETINA
FR2443233A1 (en) * 1978-12-04 1980-07-04 Essilor Int Contact lens for electro-retinography - allows light conductor to converge light in pupil for reflection to photo cell
WO1982002656A1 (en) * 1981-02-12 1982-08-19 Roussel Philippe Contact lens for the observation or irradiation of the eye
FR2500740A1 (en) * 1981-02-27 1982-09-03 Lasag Ag Contact lens for examination of irradiation of eye e.g. by laser - has input surface situated on wave front of radiation beam
EP0092513A1 (en) * 1982-04-16 1983-10-26 Lasag Ag Contact lens
FR2527073A1 (en) * 1982-05-24 1983-11-25 Lasag Ag Compound contact lens for eye treatment - has two lenses with coincident axes bonded together for e.g. laser treatment
US4502764A (en) * 1982-04-16 1985-03-05 Lasag Ag Contact lens for the observation and treatment of a point in the eye
US4728183A (en) * 1986-10-01 1988-03-01 Ocular Instruments, Inc. Ophthalmic lens for observing the fundus of the eye
US5007729A (en) * 1989-10-27 1991-04-16 Ocular Instruments, Inc. Wide angle ophthalmic lens
US5189450A (en) * 1991-05-21 1993-02-23 Ocular Instruments, Inc. High magnification ophthalmic lens
US5309187A (en) * 1992-03-18 1994-05-03 Ocular Instruments, Inc. High magnification ophthalmic lens
US5589896A (en) * 1994-10-26 1996-12-31 Ocular Instruments, Inc. Adjustable indirect ophthalmoscopy lens
US5623323A (en) * 1994-10-26 1997-04-22 Ocular Instruments, Inc. Extra wide field ophthalmic lens
WO2015001200A1 (en) * 2013-07-05 2015-01-08 Phakos Indirect ophthalmoscopy lens device used for observing the eye

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387020A1 (en) * 1977-04-15 1978-11-10 Zeiss Carl Fa OPTICAL SYSTEM FOR THE EXAMINATION OF THE RETINA
FR2443233A1 (en) * 1978-12-04 1980-07-04 Essilor Int Contact lens for electro-retinography - allows light conductor to converge light in pupil for reflection to photo cell
US4506962A (en) * 1981-02-12 1985-03-26 Lasag Ag Contact lens for observation or irradiation of the eye
WO1982002656A1 (en) * 1981-02-12 1982-08-19 Roussel Philippe Contact lens for the observation or irradiation of the eye
EP0059159A1 (en) * 1981-02-12 1982-09-01 Lasag Ag Contact lens for observation or irradiation of the eye
FR2500740A1 (en) * 1981-02-27 1982-09-03 Lasag Ag Contact lens for examination of irradiation of eye e.g. by laser - has input surface situated on wave front of radiation beam
US4502764A (en) * 1982-04-16 1985-03-05 Lasag Ag Contact lens for the observation and treatment of a point in the eye
EP0092513A1 (en) * 1982-04-16 1983-10-26 Lasag Ag Contact lens
FR2527073A1 (en) * 1982-05-24 1983-11-25 Lasag Ag Compound contact lens for eye treatment - has two lenses with coincident axes bonded together for e.g. laser treatment
US4728183A (en) * 1986-10-01 1988-03-01 Ocular Instruments, Inc. Ophthalmic lens for observing the fundus of the eye
US5007729A (en) * 1989-10-27 1991-04-16 Ocular Instruments, Inc. Wide angle ophthalmic lens
US5189450A (en) * 1991-05-21 1993-02-23 Ocular Instruments, Inc. High magnification ophthalmic lens
US5309187A (en) * 1992-03-18 1994-05-03 Ocular Instruments, Inc. High magnification ophthalmic lens
US5589896A (en) * 1994-10-26 1996-12-31 Ocular Instruments, Inc. Adjustable indirect ophthalmoscopy lens
US5623323A (en) * 1994-10-26 1997-04-22 Ocular Instruments, Inc. Extra wide field ophthalmic lens
WO2015001200A1 (en) * 2013-07-05 2015-01-08 Phakos Indirect ophthalmoscopy lens device used for observing the eye

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Legal Events

Date Code Title Description
ST Notification of lapse