Alcon Inc.
Method for making silicone hydrogel contact lenses
Last updated:
Abstract:
The present invention generally relates to a method for producing silicone hydrogel contact lenses having less optical defects or free of optical defects by subjecting the extraction tray for the formed silicone hydrogel contact lenses to a reciprocating lowering and raising motion thereof to obtain the silicone hydrogel contact lenses.
Status:
Grant
Type:
Utility
Filling date:
10 Dec 2019
Issue date:
6 Sep 2022