Composition and method for cleaning lipid deposits on contact lenses
First Claim
1. An aqueous composition for cleaning lipid deposits or for minimizing lipid deposition on a contact lens, said composition comprising:
- a poloxamine having an HLB value greater than or equal to 18;
a poloxamer having an HLB value less than or equal to 15, and is present in an amount effective to improve the lipid cleaning effect of the composition;
a straight chain polyether surfactant having an HLB value greater than or equal to 18;
one or more antimicrobial agents present in an amount effective to disinfect or preserve the composition; and
a buffering agent, and an osmolality adjusting agent, wherein the osmolality adjusting agent is present to provide an osmolality of from 200 to 400 mOsm/kg.
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Accused Products
Abstract
This invention is directed to an aqueous composition and methods for clean lipid deposits on contact lenses. In particular, a combination of non-ionic surfactants, branched and/or straight poly(ethylene oxide-propylene oxide) (PEO-PPO) block copolymers having HLB value greater than or equal to 18, with an additional straight poly(ethylene oxide-propylene oxide) (PEO-PPO) block copolymers having HLB value less than or equal to 15, has been found to improve the lipid cleaning properties of an aqueous composition for contact lenses and prevent the overgrowth of harmful bacteria, yeast and molds without adversely affecting the comfort or safety in terms of the level of toxicity to eye tissue.
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Citations
22 Claims
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1. An aqueous composition for cleaning lipid deposits or for minimizing lipid deposition on a contact lens, said composition comprising:
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a poloxamine having an HLB value greater than or equal to 18; a poloxamer having an HLB value less than or equal to 15, and is present in an amount effective to improve the lipid cleaning effect of the composition; a straight chain polyether surfactant having an HLB value greater than or equal to 18; one or more antimicrobial agents present in an amount effective to disinfect or preserve the composition; and a buffering agent, and an osmolality adjusting agent, wherein the osmolality adjusting agent is present to provide an osmolality of from 200 to 400 mOsm/kg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12, 14, 16)
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8. A method of cleaning lipid deposits or minimizing lipid deposition on a contact lens in the eye, the method comprising administering aqueous eye drop to the eye, the composition comprising:
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(a) a poloxamine having an HLB value greater than or equal to 18; and (b) a poloxamer having an HLB value less than or equal to 15, and is present in an amount effective to improve the lipid cleaning effect of the composition; a straight chain polyether surfactant having an HLB value greater than or equal to 18; one or more antimicrobial agents present in an amount effective to preserve the composition; and a buffering agent, and an osmolality adjusting agent, wherein the osmolality adjusting agent is present to provide an osmolality of from 200 to 400 mOsm/kg. - View Dependent Claims (9, 13, 15, 17, 19)
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10. A method of cleaning lipids and/or prevent lipid deposition on a contact lens while worn on an eye comprising:
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(i) soaking prior to placement on an eye contact lens in an aqueous composition comprising; (a) a poloxamine having an HLB value greater than or equal to 18; a straight chain polyether surfactant having an HLB value greater than or equal to 18; and a poloxamer having an HLB value less than or equal to 15, and is present in an amount effective to improve the lipid cleaning effect of the composition, and (ii) directly placing the treated contact lens in an eye of the wearer. - View Dependent Claims (11, 18, 20, 21, 22)
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Specification