Multifocal contact lens

Details Multifocal contact lens Multifocal contact lens

2007-12-04

2007-12-04

Stultz, Jessica T (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S177000, C351S16000R

Reexamination Certificate

active

11482570

ABSTRACT:
A contact lens formed from a transparent material having front and rear surfaces, wherein the rear surface has a base curve which is adapted to fit an eye of a wearer of the lens. The front surface has a central zone which has two different cylindrical curvatures which generate first and second central-zone refractive powers differing by an astigmatic factor. The front surface also has an outer zone with two different cylindrical curvatures which generate third and fourth central-zone refractive powers differing by the astigmatic factor, and an intermediary region, intermediate the central zone and the outer zone, having one or more contiguous intermediate zones, each intermediate zone having cylindrical curvatures differing by the astigmatic factor. The refractive powers from the central zone to the outer zone form monotonic progressions of decreasing values.

REFERENCES:
patent: 4869587 (1989-09-01), Breger
patent: 5002382 (1991-03-01), Seidner
patent: 5024517 (1991-06-01), Seidner
patent: 5125729 (1992-06-01), Mercure
patent: 5436678 (1995-07-01), Carroll
patent: 5455641 (1995-10-01), Hahne et al.
patent: 5493350 (1996-02-01), Seidner
patent: 5526071 (1996-06-01), Seidner et al.
patent: 5619289 (1997-04-01), Seidner et al.
patent: 5691797 (1997-11-01), Seidner et al.
patent: 5695509 (1997-12-01), El Hage
patent: 5754270 (1998-05-01), Rehse et al.
patent: 5760870 (1998-06-01), Payor et al.
patent: 5771088 (1998-06-01), Perrott
patent: 5835187 (1998-11-01), Martin
patent: 5864379 (1999-01-01), Dunn
patent: 5898473 (1999-04-01), Seidner et al.
patent: 6030077 (2000-02-01), Sawano et al.
patent: 6116735 (2000-09-01), Wada
patent: 6123422 (2000-09-01), Menezes et al.
patent: 6142625 (2000-11-01), Sawano et al.
patent: 6241355 (2001-06-01), Barsky
patent: 6244709 (2001-06-01), Vayntraub et al.
patent: 6260966 (2001-07-01), Sawano et al.
patent: 6357876 (2002-03-01), Oyama et al.
patent: 6457826 (2002-10-01), Lett
patent: 6467903 (2002-10-01), Back
patent: 6540353 (2003-04-01), Dunn
patent: 6802607 (2004-10-01), Roffman et al.
patent: 2002/0036748 (2002-03-01), Chapoy et al.
patent: 2002/0186345 (2002-12-01), Duppstadt
patent: 2003/0043342 (2003-03-01), Seidner
patent: 2003/0076478 (2003-04-01), Cox

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