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Aqueous antimicrobial ophthalmic solutions

  • US 4,525,346 A
  • Filed: 09/29/1983
  • Issued: 06/25/1985
  • Est. Priority Date: 09/28/1981
  • Status: Expired due to Term
First Claim
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1. An aqueous ophthalmic contact lens solution comprising:

  • from about 0.00001 to about 3.0 percent by weight/volume of a quaternary ammonium compound having a number average molecular weight in the range of about 2,000 to about 30,000, said compound having the formula ##STR3## wherein X=a pharmaceutically acceptable anion;

    an effective amount of NaCl to provide isotonicity to said solution; and

    an effective amount of buffer to provide said solution with an ophthalmically acceptable pH.

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