Multifocal contact lens

Details Multifocal contact lens Multifocal contact lens

1995-08-21

1997-09-23

Epps, Georgia Y.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 704

Patent

active

056710380

ABSTRACT:
A multifocal contact lens having a posterior surface and an anterior surface, includes a distance vision segment and a near vision segment, and at least one hole through which the posterior surface and the anterior surface communicate with each other.

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patent: 3971910 (1976-07-01), Marschalko et al.
patent: 4211476 (1980-07-01), Brummel
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patent: 4666267 (1987-05-01), Wichterle
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patent: 5044742 (1991-09-01), Cohen
patent: 5245367 (1993-09-01), Miller et al.
patent: 5293184 (1994-03-01), Ishizuka
patent: 5430504 (1995-07-01), Muckenhirn et al.
Mandell, Robert B; "A No-Jump Bifocal Contact Lens"; Optometric Weekly; Jun., 1967; vol. 58, No. 22, pp. 19-21.
Patent Abstracts of Japan, vol. 11, No. 389 (P-648) 19 Dec. 1987 & JP-A-62 153 932 (FYUJIARAI) 8 Jul. 1987 abstract.

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