Silicone hydrogel lenses with nano-textured surfaces
AssigneeNovartis AG
InventorsR. Erich Bauman, Peter Hagmann, John Dallas Pruitt, Joseph Michael Rappon
Life of this patent
Estimating the term…
Abstract
The invention is related to a method for making a silicone hydrogel contact lens having a nano-textured surface which mimics the surface texture of cornea of human eye. A method of the invention comprises creating a prime coating having nano-textures through controlled imbibition and/or depositions of a reactive polymeric coating material and fixing the nano-textures by crosslinking a hydrophilic polymeric material onto the prime coating to form a crosslinked polymeric coating that preserves the nano-textures of the prime coating and provides a nano-textured surface to the contact lens.
Claims4
1-17. (canceled)
A silicone hydrogel contact lens, comprising:
- a silicone hydrogel lens body and a non-silicone hydrogel coating thereon, wherein the non-silicone hydrogel coating comprises winkle surface patterns (nano-textures) having a roughness (Ra) of from about 5 nm to about 600 nm.
Dependencies are inferred from the claim text.