Ophthalmic lens with surface structures

Details Ophthalmic lens with surface structures Ophthalmic lens with surface structures

2005-10-25

2005-10-25

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S16000R, C351S161000

Reexamination Certificate

active

06957891

ABSTRACT:
A lens, particularly a contact lens, including surface structures on at least one of the lens surfaces. The surface structures improve lubrication conditions of the lens and increase lens comfort. Within the optical portion of the lens the surface structures comprise annular grooves of given depth and shape such that the optical performance of the lens is not adversely affected by these grooves. Appropriate surface structures on the non-optical portion may be formed in any shape and geometry.

REFERENCES:
patent: 4055378 (1977-10-01), Feneberg et al.
patent: 4618227 (1986-10-01), Bayshore
patent: 4637697 (1987-01-01), Freeman
patent: 4890911 (1990-01-01), Sulc et al.
patent: 4932970 (1990-06-01), Portney
patent: 5009497 (1991-04-01), Cohen
patent: 5044742 (1991-09-01), Cohen
patent: 0 605 841 (1994-07-01), None
patent: WO 89/07281 (1989-08-01), None
patent: WO 97/24639 (1997-07-01), None

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