Method for preventing the accumulation of inorganic deposits on contact lenses
US5589387A · kind A · utility
5Cited by
18References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/38654
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for using a composition including a neutralizing system and a sequestering agent which prevents the accumulation of inorganic deposits on contact lenses, particularly when used regularly in a conventional hydrogen peroxide disinfection regimen. The neutralizing system includes at least one reducing agent, a reductase, or both. The sequestering agent preferably is gluconic acid, a polymetaphosphate or their salts. Sodium hexametaphosphate is the most preferred sequestering agent; catalase is the most preferred agent for use as the neutralizing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.