Ophthalmic composition
US5710182A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Apr 2, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P27/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention is directed to an ophthalmic composition in the form of a topical aqueous solution consisting essentially of PA0 an ophthalmologically active agent, PA0 an ion sensitive, hydrophilic polymer in an amount a of 0.004 to 1.5% by weight, PA0 at least one salt selected from the group of inor ganic salts and buffers in a total amount of from 0.01 to 2.0% by weight, PA0 a wetting agent in an amount of 0 to 3.0% by weight, PA0 a preservative in an amount of 0 to 0.02% by weight, PA0 water, and optionally PA0 a pH regulating agent in an amount sufficient to give a pH of 4.0 to 8.0 to the composition, the ratio between salt and polymer components being such that the solution exhibits a viscosity of less than 1000 mPas. The composition contains a sufficient amount of polymer to provide for a controlled absorption of the drug into the eye, its viscosity having been reduced to provide for better handling characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.