GB2242284B - Eye testing machine - Google Patents

Eye testing machine

Info

Publication number
GB2242284B
GB2242284B GB9106009A GB9106009A GB2242284B GB 2242284 B GB2242284 B GB 2242284B GB 9106009 A GB9106009 A GB 9106009A GB 9106009 A GB9106009 A GB 9106009A GB 2242284 B GB2242284 B GB 2242284B
Authority
GB
United Kingdom
Prior art keywords
testing machine
eye testing
eye
machine
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 - Fee Related
Application number
GB9106009A
Other versions
GB2242284A (en
GB9106009D0 (en
Inventor
Paul Derek Cook
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB9106009D0 publication Critical patent/GB9106009D0/en
Publication of GB2242284A publication Critical patent/GB2242284A/en
Application granted granted Critical
Publication of GB2242284B publication Critical patent/GB2242284B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61B3/036—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters for testing astigmatism
    • 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

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)
GB9106009A 1990-03-22 1991-03-21 Eye testing machine Expired - Fee Related GB2242284B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909006436A GB9006436D0 (en) 1990-03-22 1990-03-22 Eye testing machine

Publications (3)

Publication Number Publication Date
GB9106009D0 GB9106009D0 (en) 1991-05-08
GB2242284A GB2242284A (en) 1991-09-25
GB2242284B true GB2242284B (en) 1994-01-19

Family

ID=10673058

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909006436A Pending GB9006436D0 (en) 1990-03-22 1990-03-22 Eye testing machine
GB9106009A Expired - Fee Related GB2242284B (en) 1990-03-22 1991-03-21 Eye testing machine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909006436A Pending GB9006436D0 (en) 1990-03-22 1990-03-22 Eye testing machine

Country Status (1)

Country Link
GB (2) GB9006436D0 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574912A (en) * 1967-07-26 1971-04-13 Rupert Kraft Pressurized cylindrical roller arrangement
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
GB2137377A (en) * 1983-03-31 1984-10-03 Dr Paul Derek Cook Eye-testing using laser light directed at a moving screen
GB2144235A (en) * 1983-07-12 1985-02-27 Dr Paul Derek Cook Eye-testing machine using laser speckle pattern

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574912A (en) * 1967-07-26 1971-04-13 Rupert Kraft Pressurized cylindrical roller arrangement
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
GB2137377A (en) * 1983-03-31 1984-10-03 Dr Paul Derek Cook Eye-testing using laser light directed at a moving screen
GB2144235A (en) * 1983-07-12 1985-02-27 Dr Paul Derek Cook Eye-testing machine using laser speckle pattern

Also Published As

Publication number Publication date
GB2242284A (en) 1991-09-25
GB9006436D0 (en) 1990-05-23
GB9106009D0 (en) 1991-05-08

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Legal Events

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

Effective date: 19960321