Patent ID: 6309596
Filing Date: 2001-10-30
Classification: A61L

Abstract:
A method of disinfecting and cleaning a soft contact lens with a multi-purpose solution, which method comprises:(a) soaking the lens in an ophthalmically safe solution, such that acceptable disinfection of the contact lens is obtained within a minimum recommended soaking period, the solution having a pH of 5 to 8 and comprising, in formulation, the following components:(i) an effective amount of at least one polymeric biguanide germicide, and(ii) an effective amount of a poloxamine surfactant comprising at least about 90 weight percent of poly(oxyethylene) and poly(oxypropylene) segments, in one or more copolymer chains, wherein the weight average molecular weight of said surfactant is from about 10,000 to about 30,000 and wherein at least about 70 weight percent of said poly(oxyethylene) and poly(oxypropylene) segments are poly(oxyethylene) segments, and wherein the HLB value is 27-37, and(b) directly placing the treated lens on the eye of the wearer, such that (i) rinsing with a different solution prior to placement on the eye is not required, and (ii) no other solution is required for daily cleaning of the lens.