US Patent:
20090164009, Jun 25, 2009
Inventors:
Can Hu - Irvine CA, US
Derek D. Pham - Garden Grove CA, US
Michael D. Lowery - Vista CA, US
Assignee:
Advanced Medical Optics - Santa Ana CA
International Classification:
A61F 2/16
C08G 77/04
G02B 3/12
G02C 7/04
B29D 11/00
US Classification:
623 656, 528 43, 359665, 351160 H, 264 27, 264 26
Abstract:
Described herein are silicone fluids and silicone materials that posses high glass transition temperatures (Ts) when compared to conventional silicone materials. In one embodiment, an increased Tallows the formation of objects and materials by cryogenic lathing. The fluids and materials can be formed by curing silicone fluid with a cross-linker mixture comprising a cross-linker and a monofunctional hydride compound. Upon formation, the silicone materials can be extracted over long periods of time without loss of optical quality. The silicone materials can be sufficiently soft allowing folding and insertion through small incisions in the eye. Additionally, methods of forming optical silicone materials, lenses and silicone materials in general are also disclosed. In one embodiment, the method of forming a silicone based lens using cryogenic lathing techniques is described.
