SILICONE CONTACT LENSES WITH WRINKLED SURFACE
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. The wrinkled surface is formed by subjecting the surface to a high energy source.
1 . A method comprising:
subjecting a surface of a silicone contact lens to a high energy source to form a wrinkled surface including raised ridges.
2 . The method of claim 1 , wherein the energy source is selected from a focused ion beam, electron beam or laser beam.
3 . The method of claim 1 , wherein the contact lens is comprised of a silicone hydrogel copolymer.
4 . The method of claim 1 , wherein a posterior surface of the contact lens is provided with the wrinkled surface.
5 . The method of claim 1 , wherein the raised ridges have heights of 0.5 to 1000 nm.
6 . The method of claim 5 , wherein the raised ridges have heights of 10 to 600 nm.
7 . The method of claim 1 , wherein the wrinkled surface covers an entire surface of the contact lens.
8 . The method of claim 1 , wherein the wrinkled surface covers a selected portion of a contact lens surface.
9 . The method of claim 1 , further comprising depositing a coating on the wrinkled surface.
10 . The method of claim 1 , wherein one lens surface is wrinkled and the other lens surface comprises a coating deposited thereon.