Contact lens and production method for contact lens

Details Contact lens and production method for contact lens Contact lens and production method for contact lens

2006-12-12

2006-12-12

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S177000

Reexamination Certificate

active

07147325

ABSTRACT:
It is an object of the invention to ensure in a series of contact lenses composed of an assorted plurality of contact lenses having mutually different optical characteristics such as refractive power or the like that each contact lens is capable of exhibiting advantageously and consistently a good wear comfort and tear fluid exchange. In order to attain the object, the present invention arranges each contact lens 10a, 10b, 10cmaking up the series contact lens designed and having mutually different optical characteristics in the optical zone, such that not only is a shape of the lens back surface14of the optical zone28identified, but a shape of the peripheral zone30is identified at least the outer peripheral zone44that contributes to wear comfort and tear fluid exchange.

REFERENCES:
patent: 3944347 (1976-03-01), Barkdoll et al.
patent: 6806337 (2004-10-01), Schlueter et al.
patent: 63-3910 (1988-01-01), None

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