Disinfecting and preserving systems and methods of use
AssigneeBausch & Lomb Incorporated
InventorsLai Ogunbiyi, Francis X. Smith, Thomas M. Riedhammer
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Abstract
A method of treating a contact lens wherein the lens is contacted with a solution containing a biguanide or water-soluble salt thereof, in combination with a borate buffer system, said biguanide having the formula: ##STR1## wherein n is from 1 to 500, said biguanide being present in an amount from 0.000001 to 0.0003 weight percent.
Claims12
A method of treating a contact lens which comprises treating the lens with a solution comprising a microbiocidally or fungicidally effective amount of a biguanide or water-soluble salt thereof, in combination with a borate buffer system, said biguanide having the formula:
- ##STR10## wherein n is from 1 to 500, said biguanide being present in an amount from 0.000001 to 0.0003 weight percent.
Dependencies are inferred from the claim text.