GB1456061A - Method and apparatus for measuring the refractive error of an eye - Google Patents

Method and apparatus for measuring the refractive error of an eye

Info

Publication number
GB1456061A
GB1456061A GB2044674A GB2044674A GB1456061A GB 1456061 A GB1456061 A GB 1456061A GB 2044674 A GB2044674 A GB 2044674A GB 2044674 A GB2044674 A GB 2044674A GB 1456061 A GB1456061 A GB 1456061A
Authority
GB
United Kingdom
Prior art keywords
eye
computer
reticle
detecting
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.)
Expired
Application number
GB2044674A
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.)
Tropel Inc
Original Assignee
Tropel Inc
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 Tropel Inc filed Critical Tropel Inc
Publication of GB1456061A publication Critical patent/GB1456061A/en
Expired 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
    • A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes

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)
GB2044674A 1973-05-09 1974-05-09 Method and apparatus for measuring the refractive error of an eye Expired GB1456061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35870273A 1973-05-09 1973-05-09

Publications (1)

Publication Number Publication Date
GB1456061A true GB1456061A (en) 1976-11-17

Family

ID=23410694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2044674A Expired GB1456061A (en) 1973-05-09 1974-05-09 Method and apparatus for measuring the refractive error of an eye

Country Status (4)

Country Link
JP (1) JPS542519B2 (it)
DE (1) DE2422491C2 (it)
FR (1) FR2228461B1 (it)
GB (1) GB1456061A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703723C3 (de) * 1977-01-29 1986-05-07 Fa. Carl Zeiss, 7920 Heidenheim Optisches System zur Beleuchtung des Augenhintergrundes und zur Abbildung von Testmarken auf demselben
US4180323A (en) * 1977-09-30 1979-12-25 American Optical Corporation Alignment system and ophthalmic instrument incorporating the same
JPS5542624A (en) * 1978-09-20 1980-03-26 Canon Kk Automatic eye refraction measuring system
JPS56813U (it) * 1979-06-18 1981-01-07
JPS565636A (en) * 1979-06-27 1981-01-21 Canon Kk Automatic eye refraction meter
JPS56161032A (en) * 1980-05-16 1981-12-11 Canon Kk Automatic eye refraction meter
FR2486795A1 (fr) * 1980-07-21 1982-01-22 France Etat Refractometre objectif assiste par microprocesseur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524702A (en) * 1968-09-06 1970-08-18 John G Bellows Apparatus for objectively and automatically refracting the eye

Also Published As

Publication number Publication date
JPS5015388A (it) 1975-02-18
DE2422491A1 (de) 1974-11-28
JPS542519B2 (it) 1979-02-08
FR2228461B1 (it) 1978-01-13
DE2422491C2 (de) 1984-09-27
FR2228461A1 (it) 1974-12-06

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee