Ophthalmic lens for observing the fundus of the eye

Details Ophthalmic lens for observing the fundus of the eye Ophthalmic lens for observing the fundus of the eye

1986-10-01

1988-03-01

Corbin, John K.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

350432, 351160R, 351205, A61B 310, G02B 304, G02C 704

Patent

active

047281839

ABSTRACT:
An ophthalmic lens utilized for observing the fundus of an eye using through the lens illumination and for delivering a focused laser beam to the fundus includes a contact lens and an aspheric entry lens. In combination, the lenses provide an aerial image of the fundus anterior to the entry lens.

REFERENCES:
patent: 3954329 (1976-05-01), Pomerantzeff
patent: 4134647 (1979-01-01), Ramos-Caldera
patent: 4410245 (1983-10-01), Koester
patent: 4469413 (1984-09-01), Shirayanagi
P. Roussel et al., "Contact Glass for Use . . . Optical Aspects", International Ophthalmology 6: 183-190 (1983).

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