GB8417765D0 - Eye-testing machine - Google Patents

Eye-testing machine

Info

Publication number
GB8417765D0
GB8417765D0 GB848417765A GB8417765A GB8417765D0 GB 8417765 D0 GB8417765 D0 GB 8417765D0 GB 848417765 A GB848417765 A GB 848417765A GB 8417765 A GB8417765 A GB 8417765A GB 8417765 D0 GB8417765 D0 GB 8417765D0
Authority
GB
United Kingdom
Prior art keywords
eye
testing machine
testing
machine
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
GB848417765A
Other versions
GB2144235B (en
GB2144235A (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.)
COOK P D
Original Assignee
COOK P D
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
Priority claimed from GB838318866A external-priority patent/GB8318866D0/en
Application filed by COOK P D filed Critical COOK P D
Priority to GB08417765A priority Critical patent/GB2144235B/en
Publication of GB8417765D0 publication Critical patent/GB8417765D0/en
Publication of GB2144235A publication Critical patent/GB2144235A/en
Application granted granted Critical
Publication of GB2144235B publication Critical patent/GB2144235B/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
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
GB08417765A 1983-07-12 1984-07-12 Eye-testing machine using laser speckle pattern Expired GB2144235B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08417765A GB2144235B (en) 1983-07-12 1984-07-12 Eye-testing machine using laser speckle pattern

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838318866A GB8318866D0 (en) 1983-07-12 1983-07-12 Speckle resolution surface
GB08417765A GB2144235B (en) 1983-07-12 1984-07-12 Eye-testing machine using laser speckle pattern

Publications (3)

Publication Number Publication Date
GB8417765D0 true GB8417765D0 (en) 1984-08-15
GB2144235A GB2144235A (en) 1985-02-27
GB2144235B GB2144235B (en) 1986-07-09

Family

ID=26286591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08417765A Expired GB2144235B (en) 1983-07-12 1984-07-12 Eye-testing machine using laser speckle pattern

Country Status (1)

Country Link
GB (1) GB2144235B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9006436D0 (en) * 1990-03-22 1990-05-23 Cook Paul D Eye testing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572912A (en) * 1969-10-06 1971-03-30 Bausch & Lomb Method of and apparatus for testing ametropia by laser refraction
US3659930A (en) * 1970-09-28 1972-05-02 Bausch & Lomb Segmented deflectible screen surface for testing eyes by laser refraction
US3724933A (en) * 1971-09-08 1973-04-03 Us Navy Laser speckle visual tester
US3792918A (en) * 1972-11-07 1974-02-19 Massachusetts College Optometr Laser refractor
GB2135076A (en) * 1983-01-04 1984-08-22 Marfar Ltd Eye testing apparatus

Also Published As

Publication number Publication date
GB2144235B (en) 1986-07-09
GB2144235A (en) 1985-02-27

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Legal Events

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

Effective date: 19950712