GB191212227A - Improvements relating to Sight Testing Apparatus. - Google Patents

Improvements relating to Sight Testing Apparatus.

Info

Publication number
GB191212227A
GB191212227A GB191212227DA GB191212227A GB 191212227 A GB191212227 A GB 191212227A GB 191212227D A GB191212227D A GB 191212227DA GB 191212227 A GB191212227 A GB 191212227A
Authority
GB
United Kingdom
Prior art keywords
testing apparatus
mirror
instrument
tube
improvements relating
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
Inventor
Charles Septimus Gowlland
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
Application granted granted Critical
Publication of GB191212227A publication Critical patent/GB191212227A/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
    • A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes

Abstract

12,227. Gowlland, C. S. May 23. Sight-testing apparatus.-In stationary ophthalmoscopes, retinoscopes, &c., the mirror d is mounted on a spring - urged tiltable plate e so that it can he inclined in any direction and will return to its original position on release. The plate e is mounted on a hinged eyepiece secured to the body-tube a by a catch a* and the lamp used for illumination can be masked. The lenses used for ophthalmoscopy can he turned out of the way by a movement of the rod n to adapt the instrument for use as a retinoscope, adjustable fixation points q are provided and the mirror s enables the patient to read test-type above and behind him. The tube of the instrument is capable of fine lateral adjustment.
GB191212227D 1912-05-23 1912-05-23 Improvements relating to Sight Testing Apparatus. Expired GB191212227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191212227T 1912-05-23

Publications (1)

Publication Number Publication Date
GB191212227A true GB191212227A (en) 1913-05-23

Family

ID=32572324

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191212227D Expired GB191212227A (en) 1912-05-23 1912-05-23 Improvements relating to Sight Testing Apparatus.

Country Status (1)

Country Link
GB (1) GB191212227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008012299A2 (en) * 2006-07-28 2008-01-31 Essilor International (Compagnie Generale D'optique) Method and system to assess objectively visual characteristics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008012299A2 (en) * 2006-07-28 2008-01-31 Essilor International (Compagnie Generale D'optique) Method and system to assess objectively visual characteristics
WO2008012299A3 (en) * 2006-07-28 2008-03-27 Essilor Int Method and system to assess objectively visual characteristics

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