Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2008-11-26
2011-12-27
Greece, James (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S247000
Reexamination Certificate
active
08083346
ABSTRACT:
The present invention is directed to a non-deforming contact lens for keratoconus patients comprising a central zone having a displaced central zone. In particular, the central zone is displaced from the geometric center of the lens. The shape of the central zone is egg or spoon-shaped and is rotationally asymmetrical with one semi-meridian that is shorter than a corresponding semi-meridian. An intermediate transition zone is formed integral with the periphery of the central zone, and a peripheral zone is formed integral with the periphery of the intermediate transition zone, forming a round contact lens.
REFERENCES:
patent: 3227507 (1966-01-01), Feinbloom
patent: 3482906 (1969-12-01), Volk
patent: 3684357 (1972-08-01), Tsuetaki
patent: 3973837 (1976-08-01), Page
patent: 3973838 (1976-08-01), Page
patent: 4194815 (1980-03-01), Trombley
patent: 4208362 (1980-06-01), Deichert et al.
patent: 4943150 (1990-07-01), Deichert et al.
patent: 5450145 (1995-09-01), Valentine
patent: 5570142 (1996-10-01), Lieberman
patent: 5790235 (1998-08-01), Kirschbaum
patent: 5880809 (1999-03-01), Lieberman et al.
patent: 6241355 (2001-06-01), Barsky
patent: 6491393 (2002-12-01), Appleton
patent: 7431455 (2008-10-01), Chernyak
patent: 2002/0093623 (2002-07-01), Duppstadt
patent: 2005/0203619 (2005-09-01), Altmann
patent: 2005/0280777 (2005-12-01), Dai
patent: 2006/0023162 (2006-02-01), Azar et al.
patent: 2006/0274263 (2006-12-01), Yacktman et al.
patent: 2007/0091259 (2007-04-01), Svochak
patent: 2007/0291224 (2007-12-01), Lai
patent: 2008/0007694 (2008-01-01), Wei et al.
patent: 2008/0013043 (2008-01-01), Ye
patent: 2008/0100612 (2008-05-01), Dastmalchi et al.
patent: 2008/0212020 (2008-09-01), Legerton
patent: 0 445 994 (1991-09-01), None
Greece James
Heisey David E.
Liguori Management
Sheppard Mullin Richter & Hampton LLP
LandOfFree
Contact lens for keratoconus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contact lens for keratoconus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contact lens for keratoconus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4263216