Method of disinfecting a contact lens and preserving a contact lens care solution
AssigneeCiba-Geigy Corporation
InventorsShau F. Yen, Paul C. Nicolson
Life of this patent
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Abstract
The method of imparting antimicrobial activity to a contact lens composition by adding to the composition an effective amount of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.
Claims21
A method for disinfecting a contact lens comprising contacting a hydrophilic contact lens with a composition having an effective disinfecting amount of an agent having 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.
A method of preserving a contact lens care composition comprising adding to a contact lens care composition an effective preserving amount of an agent having 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.
A composition for disinfecting a hydrophilic contact lens comprising an ophthalmologically acceptable, liquid aqueous medium and, included therein, an effective disinfecting amount of an agent having 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.
A preserved composition comprising an ophthalmologically acceptable, liquid aqueous medium and, included therein, an effective preserving amount of an agent having 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.
Dependencies are inferred from the claim text.