Multifocal contact lens

Details Multifocal contact lens Multifocal contact lens

1991-05-03

1992-06-30

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 704

Patent

active

051257297

ABSTRACT:
The lens includes on its front face a central spherical circular area surrounded by an annular aspherical area. Optionally the lens may include a second spherical annular area surrounding the first annular area. Another annular area which may be separated from the second annular area by a transition annular area, may complete the front face of the lens. The rear face may include a central circular spherical area which may be surrounded by a tangential annular area. A toric area may be centrally disposed on the rear face central area.

REFERENCES:
patent: 4971432 (1990-11-01), Koeniger

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