Concentric bifocal contact lens

Details Concentric bifocal contact lens Concentric bifocal contact lens

G - Physics

02

B

88/40

G02B 3/10 (2006.01) G02C 7/04 (2006.01)

Patent

CA 1255129

TO ALL WHOM IT MAY CONCERN: Be it known that I, J. Warren Blaker, citizen of the United States, residing in the State of New York, have invented an improvement in CONCENTRIC BIFOCAL CONTACT LENS of which the following is a SPECIFICATION ABSTRACT OF THE DISCLOSURE In accordance with the disclosure there is provided a thin circular lens body formed of a single piece of plastic material. The body has a symmetrically curved rear surface adapted to fit centrally on the corneal surface of the eye. The lens body has a near power correction region of circular periphery in the central portion thereof, surrounded by a concentric distance power annular correction region. The near power central region has an area which is substantially equal to half the pupil area of the eye under average reading light conditions.

463599

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