Coaxial opthalmoscope arrangement

Details Coaxial opthalmoscope arrangement Coaxial opthalmoscope arrangement

1974-02-13

1976-10-05

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351 12, A61B 312

Patent

active

039841570

ABSTRACT:
An improved coaxial ophthalmoscope incorporating a light trap for absorbing substantially all of the light not utilized for illuminating the retina of the eye under examination and thereby preventing the unused light from reflecting back into the eye of the viewer thus obscuring the vision thereof.

REFERENCES:
patent: 1128859 (1915-02-01), DeZeng
patent: 1795691 (1931-03-01), Wilson
patent: 1859756 (1932-05-01), Tillyen
patent: 1889456 (1932-11-01), Tillyer
patent: 2221928 (1940-11-01), Rimington
patent: 3602581 (1971-08-01), Heine
Essentials of Ophthalmology, Roland I. Pritikin, C1950 (received 11-7- 51 Patent Office) p. 132.

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