Rotationally stabilized contact lenses
US7159979B2 · kind B2 · utility
8Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Jun 20, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a lens in which the lens periphery is controlled as to each of thickness differential and both the rate of change from thinner to thicker regions and the shape of the transition from thinner to thicker regions within each of the dual thin zones. The lens of the invention substantially reduces the time for the lens' auto-positioning. Additionally, the lenses of the invention maintain their on-eye orientation better as compared to conventionally stabilized lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.