Contact lens cleaning compositions
AssigneeAdvanced Medical Optics, Inc.
InventorsRichard Graham, Joseph G. Vehige
Life of this patent
Estimating the term…
Abstract
Solutions useful to clean contact lenses include a surfactant component in an effective amount; and a viscosity inducing component, preferably selected from cellulosic derivatives and more preferably hydroxypropylmethyl cellulose, in an effective amount. Such solutions, which may include one or more additional components, have substantial contact lens cleaning benefits which, ultimately, lead to ocular health advantages and avoidance of problems caused by contact lens wear.
Claims16
A multi-purpose aqueous liquid contact lens care composition consisting of:
- a non-oxidative antimicrobial component in an amount of less than 5 ppm, said amount of non-oxidative antimicrobial being effective to disinfect a contact lens contacted with said composition, a surfactant component in an amount from about 0.005% to about 0.8% (w/v), said amount of surfactant being effective in removing deposit material from a contact lens contacted in said composition, and hydroxypropylmethyl cellulose as a viscosity inducing component in an amount from about 0.05% to 0.5% (w/v), said amount of hydroxypropylmethyl cellulose being effective to increase the viscosity of said composition and to enhance the effectiveness of said composition in passively removing deposit material from the contact lens during said contacting, said composition having a viscosity in a range of about 1.5 cps to about 30 cps.
A method for cleaning a contact lens consisting essentially of:
- soaking a contact lens laden with deposit material in a composition having a viscosity in a range of about 1.5 cps to about 30 cps, the composition comprising an aqueous liquid medium, a non-oxidative antimicrobial component in an amount of less than 5 ppm, said amount of non-oxidative antimicrobial being effective to disinfect a contact lens soaked in said composition and hydroxypropylmethyl cellulose as a viscosity inducing component in an amount from about 0.05% to 0.5% (w/v), said amount of hydroxypropylmethyl cellulose being effective to increase the viscosity of said composition and to enhance the effectiveness of said composition in passively removing deposit material from the contact lens during soaking of said contact lens laden with deposit material in said composition;
- and
- inserting said soaked contact lens into a user's eye.
A method for cleaning a contact lens consisting essentially of:
- soaking a contact lens laden with deposit material in a composition having a viscosity in a range of about 1.5 cps to about 30 cps, the composition comprising an aqueous liquid medium, a non-oxidative antimicrobial component in an amount of less than 5 ppm, said amount of non-oxidative antimicrobial being effective to disinfect a contact lens soaked in said composition and hydroxypropylmethyl cellulose as a viscosity inducing component in an amount from about 0.05% to 0.5% (w/v), said amount of hydroxypropylmethyl cellulose being effective to increase the viscosity of said composition and to enhance the effectiveness of said composition in passively removing deposit material from the contact lens during soaking of said contact lens laden with deposit material in said composition;
- rinsing said soaked contact lens with said composition;
- and
- inserting said soaked contact lens into a user's eye.
Dependencies are inferred from the claim text.