Friction stabilized contact lenses
US9927633B2 · kind B2 · utility
11Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2015 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Nov 25, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00326
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A contact lens incorporating one or more surface modified zones on the anterior surface of the lens may be utilized to generate a friction driven rotational force when the upper and/or lower eyelids pass over the one or more regions during blinking. A small difference in the coefficient of friction between the modified and unmodified regions of the lens may result in an equivalent rotational force to that of a thickness gradient lens. This small difference in the coefficient of friction produces a means to orient and stabilize the contact lens on eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.