Gonioscopy lens
US6976758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2003 |
| Grant date | Dec 20, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/117
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gonioscopy lens employs a plurality of mirror sets so that substantially the entire periphery of the anterior chamber of an eye can be viewed without rotating or moving the contact lens. Each mirror set comprises a first mirror position anterior to the eye on one side of the optical axis and a second mirror positioned posterior to the first mirror on the opposite side of the optical axis. Each set is oriented relative to each other so that the second mirror receives light rays from the peripheral portion of the anterior chamber, reflects those rays to the second mirror to the first mirror, and then reflects the light rays in a generally anterior direction so that they can be used by an ophthalmologist employing the lens. The image viewed by the ophthalmologist is upright and located over its actual position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.