Abstract: Embodiments of the technology relate to a contact lens having a core that is covalently coated by a hydrogel layer, and to methods of making such a lens. In one aspect, embodiments provide for a coated contact lens comprising a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first PEG species and a second PEG species, the first PEG species being at least partially cross-linked to the second PEG species.
Type:
Grant
Filed:
August 26, 2013
Date of Patent:
July 19, 2016
Assignee:
Ocular Dynamics, LLC
Inventors:
Karen L. Havenstrite, Victor Wayne McCray, Brandon McNary Felkins, Douglas Michael Ackermann, Garrett Cale Smith, Paul A. Cook, Evan S. Luxon, Andrew A. McGibbon
Abstract: Embodiments of the technology relate to a contact lens having a core that is coated by a hydrogel layer, and to methods of making such a lens. The coated lens can include a rigid gas permeable contact lens. The coated lens can also include a hybrid silicone and rigid gas permeable contact lens. In one aspect, embodiments provide for a coated contact lens comprising a lens core with a water equilibrium constant of less than about 2% comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population of one or more species.
Type:
Grant
Filed:
March 17, 2015
Date of Patent:
April 12, 2016
Assignee:
Ocular Dynamics, LLC
Inventors:
Karen L. Havenstrite, Victor Wayne McCray, Brandon McNary Felkins, Paul A. Cook