High osmolyte cleaning and disinfection method and solution for contact lenses
US6790816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2001 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Feb 13, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Contact lens cleaning compositions comprising preserved surfactant-containing solutions of a poly(oxypropylene)-poly(oxyethylene) adduct of ethylene diamine having a molecular weight from about 7500 to as high as 27,000 wherein at least 40 weight percent of the adduct is poly(oxyethylene) hydrophilic units. The solutions are effective in removing protein/lipid tear film deposits on both hard and soft contact lenses while providing a prophylactic-like action in retarding the formation of subsequent tear film deposits. The compositions provide effective cleaning and conditioning action using both ambient and high temperature disinfection methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.