Contact lens drug depot
US11079613B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2018 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Dec 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method includes placing a contact lens over a cornea of an eye. The contact lens includes a central convex disc, a peripheral curved portion that extends radially from the disc, an annular groove formed in the disc on the posterior portion, and one or more apertures formed in the groove. A drug substance is placed over the anterior portion of the contact lens. The groove is in contact with the cornea and is a depot for the drug substance. The groove is in fluid connection with the anterior portion of the lens via the one or more apertures. The drug substance moves in an undiluted manner to the groove and the contact lens holds the drug substance in contact with the cornea, unaffected by blinking or tear exchange, facilitating enhanced bioavailability to the cornea of the drug substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.