GB1298513A - Refraction measuring apparatus - Google Patents

Refraction measuring apparatus

Info

Publication number
GB1298513A
GB1298513A GB7819/70A GB781970A GB1298513A GB 1298513 A GB1298513 A GB 1298513A GB 7819/70 A GB7819/70 A GB 7819/70A GB 781970 A GB781970 A GB 781970A GB 1298513 A GB1298513 A GB 1298513A
Authority
GB
United Kingdom
Prior art keywords
eye
image
slit
retina
detector
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
GB7819/70A
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.)
American Optical Corp
Original Assignee
American Optical Corp
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 American Optical Corp filed Critical American Optical Corp
Publication of GB1298513A publication Critical patent/GB1298513A/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)
GB7819/70A 1969-03-24 1970-02-18 Refraction measuring apparatus Expired GB1298513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80978169A 1969-03-24 1969-03-24

Publications (1)

Publication Number Publication Date
GB1298513A true GB1298513A (en) 1972-12-06

Family

ID=25202203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7819/70A Expired GB1298513A (en) 1969-03-24 1970-02-18 Refraction measuring apparatus

Country Status (5)

Country Link
US (1) US3572910A (enExample)
JP (1) JPS5020396B1 (enExample)
DE (1) DE2013879A1 (enExample)
FR (1) FR2039838A5 (enExample)
GB (1) GB1298513A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144877A (en) * 1983-08-05 1985-03-13 Essilor Int Luminous source for measuring device of the ocular parameters of a subject

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850527A (en) * 1973-02-12 1974-11-26 American Optical Corp Apparatus and method for detecting and viewing transparent objects in the vitreous humor
US3824005A (en) * 1973-03-28 1974-07-16 Zuritsky J Apparatus for refracting eyes
DE2654608C3 (de) * 1976-12-02 1979-06-21 Fa. Carl Zeiss, 7920 Heidenheim Refraktometer zur selbsttätigen objektiven Ermittlung des Refraktionszustandes eines Auges
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
DE2716615C3 (de) * 1977-04-15 1980-06-12 Fa. Carl Zeiss, 7920 Heidenheim Handaugenspiegel
DE2815121A1 (de) * 1978-04-07 1979-10-11 Schwind Gmbh & Co Kg Herbert Verfahren und vorrichtung zur abbildung von optotypen
DE2815120A1 (de) * 1978-04-07 1979-10-11 Schwind Gmbh & Co Kg Herbert Verfahren und vorrichtung zur augenrefraktionsbestimmung
US4811739A (en) * 1982-09-03 1989-03-14 Silver Robert H Method and apparatus for the determination of substances in human fluids
DE9415710U1 (de) * 1993-05-27 1994-12-01 Heine Optotechnik GmbH & Co KG, 82211 Herrsching Vorrichtung zur Sehschärfeprüfung
GB0020728D0 (en) * 2000-08-23 2000-10-11 Kaye Wilson Lo Opthalmic device
US20030210378A1 (en) * 2002-01-17 2003-11-13 Riza Nabeel Agha Optoelectronic eye examination system
CN110558930B (zh) * 2019-09-17 2021-06-04 王恒 一种封闭式移动透镜检影镜

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE417231C (de) * 1925-08-10 Leon Lenouvel Verfahren und Vorrichtung zur Pruefung optischer Systeme, welche bei unendlicher Gegenstandsweite reelle Bilder hervorbringen
US1552055A (en) * 1924-07-08 1925-09-01 Holmes Charles Francis Refractascope
GB430836A (en) * 1934-01-29 1935-06-26 Richard Edmund Reason Improvements in apparatus for the determination of the refraction of the eye
GB437764A (en) * 1934-06-23 1935-11-05 Richard Edmund Reason Improvements in sight-testing apparatus
US2977847A (en) * 1957-04-29 1961-04-04 Univ Ohio State Res Found Optical system for microscopes or similar instruments
US3246557A (en) * 1961-10-24 1966-04-19 Block Engineering Dispersive spectrometric modulation simulating interferometry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144877A (en) * 1983-08-05 1985-03-13 Essilor Int Luminous source for measuring device of the ocular parameters of a subject

Also Published As

Publication number Publication date
US3572910A (en) 1971-03-30
JPS5020396B1 (enExample) 1975-07-15
DE2013879A1 (de) 1970-10-15
FR2039838A5 (enExample) 1971-01-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees