Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1991-10-31
1993-09-14
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351177, G02C 704
Patent
active
052453669
ABSTRACT:
A bifocal contact lens is provided having a posterior surface that is formed to fit a human cornea and an anterior surface. The bifocal contact lens has an upper portion and a lower portion when viewed in a planar view. The anterior surface includes a distance vision surface and a near vision surface. The distance vision surface is substantially semicircular in form and located in the upper portion of the bifocal lens. A near vision surface is disposed within the lower portion of the bifocal contact lens and also surrounds the distance vision surface.
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Sugarman Scott J.
Yee Duke W.
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