C. Edward Williams
Optometry at Madison St, Denver, CO
License number
Colorado 115
Issued Date
Apr 10, 1950
Renew Date
Apr 1, 2001
Expiration Date
Mar 31, 2003
Type
Optometrist
Address
Address
123 Madison St #10, Denver, CO 80206
Professional information
Contact Lens
US Patent:
5302978, Apr 12, 1994
Filed:
Oct 21, 1991
Appl. No.:
7/779993
Inventors:
John M. Evans - Fremont CA
Ashok R. Thakrar - San Jose CA
Praful Doshi - Poway CA
C. Edward Williams - Denver CO
Ashok R. Thakrar - San Jose CA
Praful Doshi - Poway CA
C. Edward Williams - Denver CO
Assignee:
Pilkington Visioncare, Inc. - Menlo Park CA
International Classification:
G02C 704
US Classification:
351162
Abstract:
A contact lens of generally disc-like configuration having a central axis extending through the contact lens and about which the contact lens is substantially symmetric in configuration. The contact lens has
a pupil zone through which the central axis extends and which comprises the area immediately circumferentially surrounding the central axis;
an iris zone, which comprises the area circumferentially surrounding the pupil zone; and
a peripheral zone which comprises the area circumferentially surrounding the iris zone and extends to the edge of the contact lens.
Further in the area immediately adjacent to the periphery of the iris zone and the contact lens and circumferentially extending therearound a band of dark substantially light-absorbing color is provided.