Truncated translating contact lens with optimized performance and method of design
US9880399B2 · kind B2 · utility
2Cited by
13References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Jan 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/048
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Translating contact lenses which are truncated for correcting presbyopia and whose design is optimized to maximize translation ability while maintaining comfort when the lens is worn on eye. Truncation of the lenses results in a non-round geometry while still retaining under-lid residency in select portions of the lens itself. Maximum thickness and back surface radius of curvature along with ramp shape can be optimized individually or in combination to maximize translation of the lens relative to the eye, when the lens is positioned on eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.