Method of making a contact lens
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United States of America Patent
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Apr 26, 2016
Grant Date -
Sep 3, 2015
app pub date -
May 15, 2015
filing date -
Oct 12, 2009
priority date (Note) -
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Abstract
A method of making a contact lens comprising the steps of reacting in a mold a polymerizable formulation comprising at least one fluorine-containing silicone monomer at least one non-fluorine-containing silicone monomer and at least one hydrophilic monomer to form a contact lens, subjecting the contact lens to one or more solvent extraction steps to remove impurities, oligomers and unreacted monomers and hydrate the contact lens, wherein all of the solvent extraction steps are undertaken using an aqueous solvent.
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