High magnification ophthalmic lens

Details High magnification ophthalmic lens High magnification ophthalmic lens

1991-05-21

1993-02-23

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

A61B 300

Patent

active

051894505

ABSTRACT:
An ophthalmic lens which has three elements, a contact lens, a center lens, and an entry lens. The lens produces a magnified aerial image of the fundus of the eye. The lens is particularly useful because it provides high magnification and detail of the fundus as well as good stereoscopic field.

REFERENCES:
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patent: 4134647 (1979-01-01), Ramos-Caldera
patent: 4410245 (1983-01-01), Koester
patent: 4452514 (1984-06-01), Spitznas
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patent: 4637699 (1987-01-01), Sigelman
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patent: 4738521 (1988-04-01), Volk
P. Roussel et al., "Contact Glass for Use . . . Optical Aspects," International Ophthalmology 6:183-190 (1983).

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