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Contact lens with a hydrophilic layer

  • US 9,395,468 B2
  • Filed: 08/26/2013
  • Issued: 07/19/2016
  • Est. Priority Date: 08/27/2012
  • Status: Active Grant
First Claim
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1. 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 polymer species, the first PEG species being at least partially cross-linked to the second polymer species, wherein the first PEG species comprises a reactive electron pair accepting group and the second polymer species comprises a reactive nucleophilic group, the reactive electron pair accepting group and the reactive nucleophilic group adapted to react to thereby form cross-links between the first PEG species and the second polymer species.

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