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Aqueous antimicrobial opthalmic solutions comprised of quaternary ammonium compound, citric acid, citrate and sodium chloride

  • US 5,037,647 A
  • Filed: 09/15/1988
  • Issued: 08/06/1991
  • Est. Priority Date: 09/15/1988
  • Status: Expired due to Term
First Claim
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1. A hypotonic contact lens composition, comprising:

  • 0.001 wt. % of a quaternary ammonium compound having an average molecular weight in the range of about 4,000 to 7,000, said compound having the formula ##STR3## about 0.021 wt. % citric acid monohydrate, 0.56 wt. % sodium citrate dihydrate, 0.05 wt. % edetate disodium, 0.516 wt. % sodium chloride;

    the composition having an osmolality of about 220 to 230 mOsm/kg.

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