Opthalmoscope examination pattern having light transmissive fixa

Details Opthalmoscope examination pattern having light transmissive fixa Opthalmoscope examination pattern having light transmissive fixa

1978-05-26

1980-04-08

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351 16, A61B 312

Patent

active

041969804

ABSTRACT:
The present application discloses an examination pattern for use in conjunction with ophthalmoscopes which provides a light transmissive opening at the pattern center to act as a reference point in the examination of the eye.

REFERENCES:
patent: 1774832 (1930-09-01), Keeler
The Optician, "A Guide to Ophthalmoscopes," vol. 157, No. 4071, 4/11/69.
Textbook of Ophthalmology, vol. II, Dirke-Elder pp. 1178-1179, Dec. 1937.

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