초록

At least one of the surfaces of a silicone contact lens is a wrinkled surface, providing the contact lens surface with a desired topography. The wrinkled surface may include random ridges, either over the entire surface of the lens, or in a desired pattern on the surface of the lens.

대표청구항 ▼

We claim: 1. A method of making a contact lens comprising: providing a silicone contact lens with a modified surface layer; swelling the contact lens with a polymerizable swelling agent; and polymerizing the swelling agent; whereby the modified surface layer becomes a wrinkled surface. 2. The me

We claim: 1. A method of making a contact lens comprising: providing a silicone contact lens with a modified surface layer; swelling the contact lens with a polymerizable swelling agent; and polymerizing the swelling agent; whereby the modified surface layer becomes a wrinkled surface. 2. The method of claim 1, wherein the contact lens is comprised of a silicone hydrogel copolymer. 3. The method of claim 2, wherein the silicone hydrogel lens is oxidized with plasma to form a silicate surface layer. 4. The method of claim 2, further comprising, following the modified surface layer becoming a wrinkled surface, hydrating the contact lens, whereby a wrinkled surface is retained on the hydrated contact lens. 5. The method of claim 2, wherein a surface of the silicone hydrogel lens is treated with a vinyl-containing plasticizer, prior to exposure to the swelling agent. 6. The method of claim 1, wherein a posterior surface of the contact lens is provided with the modified surface layer, and the posterior surface modified surface layer becomes wrinkled. 7. The method of claim 1, wherein the wrinkled surface includes raised ridges. 8. The method of claim 7, wherein the raised ridges have heights of 0.5 to 1000 nm. 9. The method of claim 8, wherein the raised ridges have heights of 10 to 600 nm. 10. The method of claim 7, wherein the wrinkled surface covers an entire surface of the contact lens. 11. The method of claim 7, wherein the wrinkled surface covers a selected portion of a contact lens surface. 12. The method of claim 1, comprising: providing a silicone contact lens with a modified surface layer; exposing the contact lens to a polymerizable swelling agent, and removing at least some of the swelling agent at the contact lens surface, with swelling agent remaining below the modified surface layer; and polymerizing the swelling agent; whereby the modified surface layer becomes a wrinkled surface. 13. The method of claim 1, further comprising grafting a surface agent to the wrinkled modified surface layer. 14. The method of claim 1, wherein one lens surface is wrinkled and the other lens surface comprises a surface agent grafted thereto.