Translating contact lens having a ramped ridge
US6921168B2 · kind B2 · utility
16Cited by
9References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2003 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Jul 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/048
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a translating contact lens having a central axis, an anterior surface and an opposite posterior surface. The anterior surface includes an optical zone and a ramped ridge zone, which is disposed below the optical zone and capable of controlling contact lens position on an eye in primary gaze or translating amount across the eye when the eye changes from gazing at an object at a distance to gazing at an object at an intermediate distance or at a nearby object, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.