FR2425229A1 - Attachment for binocular microscope to measure curvature of cornea - compares control image with image reflected by cornea - Google Patents

Attachment for binocular microscope to measure curvature of cornea - compares control image with image reflected by cornea

Info

Publication number
FR2425229A1
FR2425229A1 FR7814663A FR7814663A FR2425229A1 FR 2425229 A1 FR2425229 A1 FR 2425229A1 FR 7814663 A FR7814663 A FR 7814663A FR 7814663 A FR7814663 A FR 7814663A FR 2425229 A1 FR2425229 A1 FR 2425229A1
Authority
FR
France
Prior art keywords
cornea
image
attachment
binocular microscope
compares control
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Withdrawn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
FR7814663A
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.)
Individual
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
Priority to FR7814663A priority Critical patent/FR2425229A1/en
Publication of FR2425229A1 publication Critical patent/FR2425229A1/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Withdrawn legal-status Critical Current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
    • A61B3/107—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)
  • 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

The opthalmascope is for measuring the curvature of the cornea by comparing an image reflected by the cornea with a control image. A bio-microscope is used with an attachment to generate the comparison image. This attachment has a light source, a condenser, a circular diaphragm limited on each side by two parallel edges and a mirror reflecting the image into the eyepiece of the binocular microscope. The appts. can be pivoted about the optical axis and is accurate to a tenth of a millimeter.
FR7814663A 1978-05-10 1978-05-10 Attachment for binocular microscope to measure curvature of cornea - compares control image with image reflected by cornea Withdrawn FR2425229A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7814663A FR2425229A1 (en) 1978-05-10 1978-05-10 Attachment for binocular microscope to measure curvature of cornea - compares control image with image reflected by cornea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7814663A FR2425229A1 (en) 1978-05-10 1978-05-10 Attachment for binocular microscope to measure curvature of cornea - compares control image with image reflected by cornea

Publications (1)

Publication Number Publication Date
FR2425229A1 true FR2425229A1 (en) 1979-12-07

Family

ID=9208355

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814663A Withdrawn FR2425229A1 (en) 1978-05-10 1978-05-10 Attachment for binocular microscope to measure curvature of cornea - compares control image with image reflected by cornea

Country Status (1)

Country Link
FR (1) FR2425229A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269269A1 (en) * 1986-11-03 1988-06-01 Riyaz Ahmad Medical apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1434261A (en) * 1965-02-15 1966-04-08 Topographic ophthalmometer
US3264932A (en) * 1964-05-27 1966-08-09 Charles E Hendricks Method and device for presenting a visual comparison of two different curved surfaces
FR2279068A1 (en) * 1974-07-17 1976-02-13 Surgical Microsystems Inc METHOD AND APPARATUS FOR MEASURING THE ASPHERICITY OF THE HORN OF THE EYE
FR2365325A1 (en) * 1976-09-25 1978-04-21 Zeiss Carl Fa DEVICE FOR DETERMINING CORNEAL ASTIGMATISM OF THE HUMAN EYE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264932A (en) * 1964-05-27 1966-08-09 Charles E Hendricks Method and device for presenting a visual comparison of two different curved surfaces
FR1434261A (en) * 1965-02-15 1966-04-08 Topographic ophthalmometer
FR2279068A1 (en) * 1974-07-17 1976-02-13 Surgical Microsystems Inc METHOD AND APPARATUS FOR MEASURING THE ASPHERICITY OF THE HORN OF THE EYE
FR2365325A1 (en) * 1976-09-25 1978-04-21 Zeiss Carl Fa DEVICE FOR DETERMINING CORNEAL ASTIGMATISM OF THE HUMAN EYE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269269A1 (en) * 1986-11-03 1988-06-01 Riyaz Ahmad Medical apparatus

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Legal Events

Date Code Title Description
GC Lien (pledge) constituted
ST Notification of lapse