Conditioning solution for contact lenses and a method of using the same
OwnerFu-Pao Tsaoinventor
Life of this patent
Estimating the term…
Abstract
A composition for conditioning a contact lens comprising a surfactant comprising a copolymer of hydrophobe and hydrophile blocks the structure: HO-(hydrophobe)x-(hydrophile)y-(hydrophobe)x-H where x and y are integers reflecting the respective hydrophile and hydrophobe blocks of said copolymer.
Claims19
A composition for conditioning a contact lens comprising an aqueous solution of:
- at least one of a buffer compatible with ocular tissue or a tonicity component compatible with ocular tissue;
- and
- a surfactant comprising a copolymer of hydrophobe and hydrophile blocks of the structure:
- HO-(hydrophobe)x-(hydrophile)y-(hydrophobe)x-H
- wherein x and y are integers reflecting the respective hydrophile and hydrophobe blocks of said copolymer;
- and
- wherein said surfactant is greater than 0.8% by weight of the solution.
A composition for conditioning a contact lens comprising an aqueous solution of:
- a buffer compatible with ocular tissue;
- a tonicity component;
- and
- a surfactant comprising a copolymer of hydrophobe and hydrophile blocks of the structure:
- HO-(hydrophobe)x-(hydrophile)y-(hydrophobe)x-H
- wherein x and y are integers reflecting the respective hydrophile and hydrophobe blocks of said copolymer
- wherein said composition is substantially free of a disinfecting amount of hydrogen peroxide.
A method for conditioning a contact lens comprising the step of contacting a contact lens with an aqueous solution comprising a polyoxyethylene-polyoxypropylene block copolymer terminated in secondary hydroxyl groups and wherein said aqueous solution is substantially free of a disinfecting amount of hydrogen peroxide.
Dependencies are inferred from the claim text.