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AssigneeOcular Dynamics, LLC
InventorsKaren L. Havenstrite, Victor Wayne McCray, Brandon McNary Felkins, Paul A. Cook
Estimating the term…
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.
A multi-layer contact lens comprising a lens core layer covered by an outer hydrophilic polymer layer, wherein the hydrophilic polymer layer is attached to the core layer by a covalent linkage, wherein the hydrophilic polymer layer comprises a first macromer subpopulation comprising polyethylene glycol (PEG) and a second macromer subpopulation comprising polyacrylamide, wherein the first macromer subpopulation and second macromer subpopulations are at least partially covalently cross-linked, wherein the hydrophilic polymer layer has a thickness of less than about 50 nm.
Dependencies are inferred from the claim text.