Contact lenses with improved oxygen transmission
US9389434B2 · kind B2 · utility
11Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2013 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | May 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/049
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Contact lenses may be designed with locally thinned regions to increase oxygen transmissibility to the eye. The locally thinned regions are preferably positioned outside of the optic zone and in the thicker peripheral zone. For a contact lens formed from a specific material, creating local thinner regions, for example, dimples in the back curve surface of the lens, provides an effective and efficient means for increasing oxygen diffusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.