FR2404422A1 - Instrument compact de refraction subjective - Google Patents

Instrument compact de refraction subjective

Info

Publication number
FR2404422A1
FR2404422A1 FR7826835A FR7826835A FR2404422A1 FR 2404422 A1 FR2404422 A1 FR 2404422A1 FR 7826835 A FR7826835 A FR 7826835A FR 7826835 A FR7826835 A FR 7826835A FR 2404422 A1 FR2404422 A1 FR 2404422A1
Authority
FR
France
Prior art keywords
compact
patient
instrument
subjective refraction
optical system
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.)
Granted
Application number
FR7826835A
Other languages
English (en)
Other versions
FR2404422B1 (fr
Inventor
Staffan B Persson
Robert B Tackaberry
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 FR2404422A1 publication Critical patent/FR2404422A1/fr
Application granted granted Critical
Publication of FR2404422B1 publication Critical patent/FR2404422B1/fr
Granted 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
    • A61B3/13—Ophthalmic microscopes

Abstract

L'invention concerne un instrument ophtalmique compact pour la réfraction des yeux d'un patient. Cet instrument compact est obtenu par un pliage substantiel du système optique. Le système optique est plié en un endroit en utilisant un moyen de réflexion qui se déplace pour varier l'endroit où une image cible peut être vue par un patient pour identifier la puissance sphérique d'une lentille de correction, si elle est exigée par le patient. Une seconde partie pliée du chemin optique contient un moyen cylindrique pour varier cylindriquement l'image de la lentille.
FR7826835A 1977-09-30 1978-09-19 Instrument compact de refraction subjective Granted FR2404422A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/838,178 US4179196A (en) 1977-09-30 1977-09-30 Compact subjective refractive instrument

Publications (2)

Publication Number Publication Date
FR2404422A1 true FR2404422A1 (fr) 1979-04-27
FR2404422B1 FR2404422B1 (fr) 1983-07-29

Family

ID=25276477

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7826835A Granted FR2404422A1 (fr) 1977-09-30 1978-09-19 Instrument compact de refraction subjective

Country Status (10)

Country Link
US (1) US4179196A (fr)
JP (1) JPS5454492A (fr)
AT (1) AT383027B (fr)
AU (1) AU521938B2 (fr)
CA (1) CA1097112A (fr)
CH (1) CH637010A5 (fr)
DE (1) DE2829955A1 (fr)
FR (1) FR2404422A1 (fr)
GB (1) GB2005437B (fr)
HK (1) HK17385A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404867A1 (fr) * 1977-09-30 1979-04-27 American Optical Corp Systeme d'alignement et instrument optique comprenant ce systeme
FR2496447A1 (fr) * 1980-10-30 1982-06-25 American Optical Corp Instrument optique muni de moyens de commande, en particulier pour la determination de l'astigmatisme

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437818A1 (fr) * 1978-10-05 1980-04-30 Essilor Int Procede et dispositif pour la presentation de tests a un sujet a differentes distances
JPS55143127A (en) * 1979-04-27 1980-11-08 Tokyo Optical Ophthalmoscopy device which can inspect at near distance
US4943162A (en) * 1984-11-09 1990-07-24 Sims Clinton N Astigmatic self-refractor and method of use
US5120124A (en) * 1984-11-09 1992-06-09 Sims Clinton N Devices for determining the crossed cylinder powers and axes for multiple lens sets
US5500698A (en) * 1984-11-09 1996-03-19 Sims; Clinton N. Optical instruments such as retinoscopes which may incorporate multiple lens assemblies and methods of calibrating such instruments
US4820040A (en) * 1984-11-09 1989-04-11 Sims Clinton N Crossed cylinder lenses refractor and method of use
US5285224A (en) * 1984-11-09 1994-02-08 Sims Clinton N Methods and apparatus for determining refractive error
US4840479A (en) * 1984-11-09 1989-06-20 Sims Clinton N Crossed cylinder lenses refractor with three-lens variable crossed cylinder assembly and method of use
US5430508A (en) * 1984-11-09 1995-07-04 Sims; Clinton N. Refraction techniques using modified streak retinoscope assembly
US5953101A (en) * 1995-01-12 1999-09-14 Wound Healing Of Oklahoma Vision collimator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927933A (en) * 1973-08-06 1975-12-23 Humphrey Instruments Inc Apparatus for opthalmological prescription readout
US3947097A (en) * 1974-03-18 1976-03-30 Humphrey Instruments, Inc. Process and apparatus for astigmatic and spherical subjective testing of the eye
FR2404867A1 (fr) * 1977-09-30 1979-04-27 American Optical Corp Systeme d'alignement et instrument optique comprenant ce systeme

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6807941U (de) * 1968-11-21 1969-05-29 Rodenstock Optik G Verbesserung an refraktometern
US3669530A (en) * 1970-01-26 1972-06-13 David Guyton Lens for target image displacement in a lens measuring instrument
US3785723A (en) * 1973-02-27 1974-01-15 D Guyton Method and apparatus for locating a principal meridian of an astigmatic optical system
FR2291620A1 (fr) * 1974-11-12 1976-06-11 Lb Air Dispositif de shuntage a connexion electrique directe en particulier pour modules de raccordement etanche
US4105302A (en) * 1976-06-23 1978-08-08 Tate Jr George W Automatic refraction apparatus and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927933A (en) * 1973-08-06 1975-12-23 Humphrey Instruments Inc Apparatus for opthalmological prescription readout
US3947097A (en) * 1974-03-18 1976-03-30 Humphrey Instruments, Inc. Process and apparatus for astigmatic and spherical subjective testing of the eye
FR2404867A1 (fr) * 1977-09-30 1979-04-27 American Optical Corp Systeme d'alignement et instrument optique comprenant ce systeme

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404867A1 (fr) * 1977-09-30 1979-04-27 American Optical Corp Systeme d'alignement et instrument optique comprenant ce systeme
FR2496447A1 (fr) * 1980-10-30 1982-06-25 American Optical Corp Instrument optique muni de moyens de commande, en particulier pour la determination de l'astigmatisme

Also Published As

Publication number Publication date
AU521938B2 (en) 1982-05-06
ATA633278A (de) 1986-10-15
HK17385A (en) 1985-03-22
GB2005437B (en) 1982-03-24
CA1097112A (fr) 1981-03-10
US4179196A (en) 1979-12-18
DE2829955A1 (de) 1979-04-12
AU3812278A (en) 1980-01-24
JPS5454492A (en) 1979-04-28
GB2005437A (en) 1979-04-19
FR2404422B1 (fr) 1983-07-29
CH637010A5 (de) 1983-07-15
AT383027B (de) 1987-05-11

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse