Wettable, flexible, oxygen permeable contact lens containing block copolymer polysiloxane-polyoxyalkylene backbone units and use thereof
US5070169A · kind A · utility
154Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1989 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Apr 24, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Contact lenses which are optically clear, wettable, flexible, and of high oxygen permeability in the aqueous ocular environment of use, of a block copolymer containing polysiloxane and polyoxyalkylene oxide units are disclosed, as well as the preparation thereof and methods of treating vision defects therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.