Toric contact lenses
US7621635B2 · kind B2 · utility
0Cited by
14References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Dec 28, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A set of toric contact lenses, each lens in the set including a posterior surface, an anterior surface, a peripheral zone and a center thickness for each lens. At least one of said surfaces includes a toric optical zone, and each lens in the set having different cylindrical correction. The center thicknesses of the lenses decreasing monotonically with increased cylindrical power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.