Ophthalmoscope with uniform illumination

Details Ophthalmoscope with uniform illumination Ophthalmoscope with uniform illumination

1977-06-20

1980-04-29

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

A61B 310

Patent

active

042003628

ABSTRACT:
Apparatus for viewing an eye fundus through a contact lens has an illuminating element that illuminates the fundus through the sclera. The illuminating element includes at least one fiber optic bundle with an exit facet for placement contiguous with the sclera, generally through whatever thickness of occular conjunctiva is present. The apparatus also has an optical mask system which masks the image of the fundus portion most intensely illuminated by the fiber optic exit facet to control over-illumination of that fundus portion.

REFERENCES:
patent: 3259039 (1966-07-01), Okajima
patent: 3514193 (1970-05-01), Himmelmann
patent: 3954329 (1976-05-01), Pomerantzeff
patent: 4026638 (1977-05-01), Govignon
Paul R. Lichter, "Transillumination . . . Eye," Am. J. of Ophthalmology, vol. 73, No. 6, pp. 927-929 & 931, Jun. 1972.

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