Troy Miller
Combative Sports in Grand Junction, CO
License number
Utah 7009249-4805
Issued Date
May 10, 2009
Expiration Date
May 10, 2010
Category
Unarmed Combat
Type
Referee
Address
Address
Grand Junction, CO
Professional information
Soft, Bifocal Contact Lens
US Patent:
5608471, Mar 4, 1997
Filed:
Jul 3, 1995
Appl. No.:
8/497846
Inventors:
Troy A. Miller - Grand Junction CO
Assignee:
Westcon Contact Lens Co., Inc. - Grand Junction CO
International Classification:
G02C 704
US Classification:
351161
Abstract:
A soft contact lens having the ability to make bifocal corrections can be made by the conjunctive use of lens elements comprising: an annular main body portion having a concave, eye-contacting, posterior surface and a non-continuous, convex, anterior surface having a near vision-aiding add zone, a transition zone, a far vision-aiding zone and a slab-off system and wherein: (a) the near vision-aiding add zone has a diameter of from about 1. 5 mm to about 3. 5, (b) the transition zone has a base length of from about 0. 03 mm to about 0. 20 and (c) a slope angle of from about 15. degree. to about 40. degree. Such lenses also can be used to correct astigmatisms by providing their posterior surface with a toric optic zone.