The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2004
Filed:
Jun. 23, 2003
Applicant:
Inventor:
Alan H. Grant, Chevy Chase, MD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02C 7/10 ;
U.S. Cl.
CPC ...
G02C 7/10 ;
Abstract
Eyeglasses for enhancing visual contrast through the use of hetero-chromic filters are provided. One lens of the glasses is tinted pale green while the other lens is tinted to be a slightly darker yellow. The resulting pair of glasses, when worn, creates color-retinal rivalry between the two eyes to encourage better visual contrast and provide improved vision quality, especially at night. Such hetero-chromic filtration may also be effectively embodied within contact lenses, whether hard, gas-permeable or hydrophilic soft lenses, by incorporating an appropriate dye into each contact lens that is both benign and non-irritating to the eye tissues.