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Sterilizing hydrophilic contact lenses

  • US 4,312,833 A
  • Filed: 09/16/1977
  • Issued: 01/26/1982
  • Est. Priority Date: 11/14/1974
  • Status: Expired due to Term
First Claim
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1. A method of sterilizing a contact lens formed of a hydrophilic polymer which comprises contacting the lens with an aqueous solution of an iodophor selected from the group consisting of complexes of iodine with hydrophilic polymers and nonionic surface active agents, said solution containing a sufficient quantity of an alkali metal salt of formic acid to reduce the available iodine level of the solution to substantially zero within a period of from 30 minutes to 8 hours at a temperature of from 20°

  • to 25°

    C.;

    the reaction products of the iodophor and the alkali metal salt being non-toxic and a non-irritant.

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