发明名称 |
CONTACT LENS WITH A HYDROPHILIC LAYER |
摘要 |
Embodiments of the technology relate to a contact lens having a core that is coated by a hydrogel layer, and to methods of making such a lens. The coated lens can include a rigid gas permeable contact lens. The coated lens can also include a hybrid silicone and rigid gas permeable contact lens. In one aspect, embodiments provide for a coated contact lens comprising a lens core with a water equilibrium constant of less than about 2% comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population of one or more species. |
申请公布号 |
US2015234204(A1) |
申请公布日期 |
2015.08.20 |
申请号 |
US201514660728 |
申请日期 |
2015.03.17 |
申请人 |
HAVENSTRITE Karen L.;MCCRAY Victor Wayne;FELKINS Brandon McNary;COOK Paul A. |
发明人 |
HAVENSTRITE Karen L.;MCCRAY Victor Wayne;FELKINS Brandon McNary;COOK Paul A. |
分类号 |
G02C7/04;G02B1/04 |
主分类号 |
G02C7/04 |
代理机构 |
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代理人 |
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主权项 |
1. A multi-layer contact lens comprising a lens core layer covered by an outer hydrophilic polymer layer, wherein the hydrophilic polymer layer is attached to the core layer by a covalent linkage, wherein the hydrophilic polymer layer comprises a first macromer subpopulation comprising polyethylene glycol (PEG) and a second macromer subpopulation comprising polyacrylamide, wherein the first macromer subpopulation and second macromer subpopulations are at least partially covalently cross-linked, wherein the hydrophilic polymer layer has a thickness of less than about 50 nm. |
地址 |
San Francisco CA US |