Low water content soft lens for eye, and method for producing the same
US9046644B2 · kind B2 · utility
3Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2011 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Feb 16, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2240/001
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A low water content soft lens for eye is provided, which includes a layer made of an acidic polymer and a basic polymer on at least a part of a surface of a base material containing a polysiloxane compound. Adhesion of the lens to the cornea during wear, which has hitherto been regarded as a problem in a conventional low water content soft lens for eye, can be reduced or avoided when using the low water content soft lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.