Progressive multifocal ophthalmic lenses with prism for correcti

Details Progressive multifocal ophthalmic lenses with prism for correcti Progressive multifocal ophthalmic lenses with prism for correcti

1983-12-05

1986-08-19

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351175, G02C 706

Patent

active

046066268

ABSTRACT:
A progressive multifocal ophthalmic lens. The lens includes a lens surface having a far vision viewing, a near vision viewing zone and an intermediate vision viewing zone disposed therebetween. A prism having a base is added to the lens. The base lies in the direction of 90.degree. to the lens surface. The prism is added in order to improve chromatic aberration and not to remedy squint.

REFERENCES:
patent: 1393853 (1921-10-01), Tillyer
patent: 2442849 (1948-06-01), Glazer
patent: 4315673 (1982-02-01), Guilino et al.

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