Optical correction
Patent Information
- Authority / Receiving Office
- US Β· United States
- Current Assignee / Owner
- PRESBYOPIA TREATMENTS
- Publication Date
- 2009-06-18
- Estimated Expiration
- Not applicable Β· inactive patent
Abstract
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present application claims the benefit of and priority to British Patent Application No. 0724558.2, filed in the United Kingdom on Dec. 15, 2007, the entire disclosure of which is incorporated herein by reference.BACKGROUND
[0002] 1. Technical Field
[0003] The present invention relates to topical compositions to improve visual acuity and to methods for their use. More particularly, but not exclusively, it relates to eye-drops and the like to ameliorate the effects of presbyopia, myopia, hypermetropia. astigmatism and combinations thereof.
[0004] 2. Background of Related Art
[0005] One prevalent form of visual defect is presbyopia, in which the lens of the eye becomes relatively rigid, particularly with age, so that it becomes increasingly difficult to focus. This leads to eyestrain, and ultimately to recession of the near point, such that a sufferer of presbyopia may be unable to read or work on objects at arm's length.
[0006] The conventional r...