Progressive multifocal ophthalmic lens

Details Progressive multifocal ophthalmic lens Progressive multifocal ophthalmic lens

1984-09-10

1985-08-27

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 706

Patent

active

045374791

ABSTRACT:
Progressive multifocal ophthalmic lenses are provided having a far vision viewing zone, a near vision viewing zone and an intermediate vision viewing zone therebetween. A principal meridian curve extends vertically through the far, intermediate and near vision viewing zones. The surface power along the principal meridian curve in the intermediate vision viewing zone varies progressively. The sizes of the zones and configuration of the zones are set by predetermined conditions and equations. The construction provides improved lenses for use in activities such as sports, driving, shopping and the like.

REFERENCES:
patent: 4315673 (1982-02-01), Guilino et al.

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