WASH COMPOSITION FOR THE HANDLING OF CONTACT LENSES
A method for minimizing microbial contamination of contact lenses during the handling of the lenses. The method comprises instructing a person that wears contact lenses to wash their hands prior to the handling of the contact lenses with a wash composition. The wash composition includes one or more surfactants selected from the group consisting of non-ionic, cationic, amphoteric or zwitterionic surfactants, and optionally, an anionic surfactant. The wash composition also includes an antimicrobial agent that is compatible with ocular tissue. The invention is also directed to a kit for to assist contact lens wearers with the care maintenance of their lenses. The kit includes the wash composition and a multipurpose contact lens solution. The wash composition is suitable for use with the multipurpose contact lens solution.
1 . A method for minimizing microbial contamination of contact lenses during the handling of the lenses, the method comprising:
instructing a person that wears contact lenses to wash their hands prior to the handling of the contact lenses with a wash composition comprising:
one or more surfactants selected from the group consisting of non-ionic, cationic, amphoteric or zwitterionic surfactants, and optionally, an anionic surfactant, wherein the anionic surfactant, if present, is present at a concentration that is 30 wt. % or less of the total surfactant concentration; and
an antimicrobial agent that is compatible with ocular tissue.
2 . The method of claim 1 wherein the anionic surfactant, if present, is present at a concentration that is 10 wt. % or less of the total surfactant concentration.
3 . The method of claim 1 to 2 wherein the concentration of anionic surfactant in the composition is less than 2 wt. %.
4 . The method of claim 1 to 3 wherein the total surfactant concentration in the composition is from 5 wt. % to 40 wt. %.
5 . The method of claim 1 to 4 wherein the composition further comprises a moisturizing agent.
6 . The method of claim 1 to 5 wherein the composition further comprises a polyol.
7 . The method of claim 1 to 6 wherein the antimicrobial agent is selected from the group consisting of poly(hexamethylene biguanide) and alexidine.
8 . The method of claims 1 to 4 wherein the antimicrobial agent is selected from the group consisting of poly(hexamethylene biguanide), chlorhexidine, alexidine, polyquaternium-1, cetylpyridinium chloride, quaternary ammonium esters and fatty acid monoglycerides.
9 . The method of claims 1 to 4 wherein the handling of the contact lenses includes the rubbing of the lenses to assist in the cleaning and disinfection of the lenses, or inserting the lenses in the eyes.
10 . The method of claims 1 to 9 wherein the wash composition is in the form of a liquid or gel.
11 . A kit for to assisting contact lens wearers with the care maintenance of their lenses, the kit comprising:
a wash composition comprising one or more surfactants selected from the group consisting of non-ionic, cationic, amphoteric or zwitterionic surfactants, and optionally, an anionic surfactant, wherein the anionic surfactant, if present, is present at a concentration that is 30 wt. % or less of the total surfactant concentration and an antimicrobial agent that is compatible with ocular tissue; and
a multipurpose contact lens solution, wherein the wash composition is suitable for use with the multipurpose contact lens solution such that any one component in the wash composition at a reduced concentration of 5% the concentration in the wash composition does not negatively impacts the biocidal efficacy of the multipurpose solution.
12 . The kit of claim 11 wherein the any one component in the wash composition at a reduced concentration of 10% the concentration in the wash composition does not negatively impacts the biocidal efficacy of the multipurpose solution.
13 . The kit of claim 11 and 12 wherein the antimicrobial agent is selected from the group consisting of poly(hexamethylene biguanide), chlorhexidine, alexidine, polyquaternium-1, cetylpyridinium chloride, quaternary ammonium esters and fatty acid monoglycerides.
14 . The kit of claims 11 and 12 wherein the antimicrobial agent is selected from the group consisting of poly(hexamethylene biguanide) and alexidine.