Patent ID: 8197724
Filing Date: 2012-06-12
Classification: B29D,Y10S

Abstract:
1. A method of manufacturing a polymerized silicone hydrogel contact lens from a contact lens mold member, comprising: demolding a contact lens mold to separate a first contact lens mold member and a second contact lens mold member from each other, such that a polymerized silicone hydrogel contact lens product remains attached to or in contact with a convex surface of the second contact lens mold member, the convex surface of the second mold member defining a posterior lens surface; delensing the polymerized silicone hydrogel contact lens product by (a) compressing a portion of the second contact lens mold member having the polymerized silicone hydrogel contact lens product attached to or in contact therewith, and (b) directing a gas toward the polymerized silicone hydrogel contact lens product to facilitate separation of the polymerized silicone hydrogel contact lens product from the portion of the second contact lens mold member; and after the demolding and delensing, extracting an extractable component from the polymerized silicone hydrogel contact lens product; wherein the directing step begins before the compressing step.