High Ion And Metabolite Flux Lenses And Materials
AssigneeAlcon Inc.
InventorCharles Freeman
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Abstract
An exemplary embodiment provides a biocompatible polymer composition suitable for making intraocular lenses, especially posterior chamber phakic lenses, that includes a hydrogel having an equilibrium water content of less than about 55 wt. %. The hydrogel has a refractive index greater than about 1.41 and a sodium ion flux between about 16 to about 20 μeq-mm/hr/cm2.
Claims20
A biocompatible polymer composition comprising:
- a hydrogel having an equilibrium water content of less than about 55 wt. %, a refractive index greater than about 1.41 and a total sodium and chloride ion flux greater than about 16 μeq-mm/hr/cm2.
A polymeric composition comprising:
- a polymerization product of from about 68 to about 71 wt. % N-vinyl-pyrolidone and about 28 to about 30 wt. % 2-phenyl ethyl methacrylate, the polymerization product having a refractive index greater than about 1.41 and an equilibrium water content of less than about 55 wt. %.
A phakic posterior chamber intraocular lens comprising a polymerization product of from about 68 to about 71 wt. % N-vinyl-pyrolidone and about 28 to about 30 wt. % 2-phenyl ethyl methacrylate, the polymerization product having a refractive index greater than about 1.41 and an equilibrium water content of less than about 55 wt. %.
Dependencies are inferred from the claim text.