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Silicone Hydrogel Contact Lenses

  • US 20120220689A1
  • Filed: 02/24/2012
  • Published: 08/30/2012
  • Est. Priority Date: 02/28/2011
  • Status: Active Grant
First Claim
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1. A silicone hydrogel contact lens comprising:

  • a polymeric lens body that is the reaction product of a polymerizable composition comprisinga) at least one mono-functional acrylate-containing siloxane monomer having a molecular weight of less than 2,000;

    b) at least one bi-functional acrylate-containing siloxane monomer having a molecular weight of at least 3,000;

    c) at least one hydrophilic vinyl-containing monomer; and

    d) at least one vinyl-containing cross-linking agent,wherein the polymerizable composition has a molar ratio of total amount of mono-functional acrylate-containing siloxane monomer to total amount of bi-functional acrylate-containing siloxane monomer of at least 30;

    1, respectively.

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