CA598683A - Eye testing instruments - Google Patents

Eye testing instruments

Info

Publication number
CA598683A
CA598683A CA598683A CA598683DA CA598683A CA 598683 A CA598683 A CA 598683A CA 598683 A CA598683 A CA 598683A CA 598683D A CA598683D A CA 598683DA CA 598683 A CA598683 A CA 598683A
Authority
CA
Canada
Prior art keywords
testing instruments
eye testing
eye
instruments
testing
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
CA598683A
Inventor
T. Armbruster John
R. Thorburn Milton
R. Wright John
F. Schenk George
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
Publication date
Application granted granted Critical
Publication of CA598683A publication Critical patent/CA598683A/en
Expired legal-status Critical Current

Links

CA598683A Eye testing instruments Expired CA598683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA598683T

Publications (1)

Publication Number Publication Date
CA598683A true CA598683A (en) 1960-05-24

Family

ID=35814459

Family Applications (1)

Application Number Title Priority Date Filing Date
CA598683A Expired CA598683A (en) Eye testing instruments

Country Status (1)

Country Link
CA (1) CA598683A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820040A (en) * 1984-11-09 1989-04-11 Sims Clinton N Crossed cylinder lenses refractor and method of use
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
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
US5278593A (en) * 1992-03-18 1994-01-11 Woodlyn, Inc. Ophthalmic dial advancement system
US5285224A (en) * 1984-11-09 1994-02-08 Sims Clinton N Methods and apparatus for determining refractive error
US5430508A (en) * 1984-11-09 1995-07-04 Sims; Clinton N. Refraction techniques using modified streak retinoscope assembly
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

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820040A (en) * 1984-11-09 1989-04-11 Sims Clinton N Crossed cylinder lenses refractor and method of use
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
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
US5285224A (en) * 1984-11-09 1994-02-08 Sims Clinton N Methods and apparatus for determining refractive error
US5430508A (en) * 1984-11-09 1995-07-04 Sims; Clinton N. Refraction techniques using modified streak retinoscope assembly
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
US5278593A (en) * 1992-03-18 1994-01-11 Woodlyn, Inc. Ophthalmic dial advancement system
US5650839A (en) * 1993-08-03 1997-07-22 Sims; Clinton N. Retinoscope assembly with scale

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