Corneal inlay with nutrient transport structures
US9427311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2010 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Sep 12, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0024
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Corneal inlays and masks and methods of improving vision of a patient with corneal inlays and masks are provided. Masks with an aperture can improve the vision of a patient, such as by increasing the depth of focus of an eye of a patient. For example, a mask can have an annular portion with a relatively low visible light transmission surrounding a relatively high transmission central portion, such as a clear lens or aperture. This provides an annular mask with a small aperture for light to pass through to the retina to increase depth of focus. The mask may also include nutrient transport structures that provide nutrient flow through mask to prevent nutrient depletion. These nutrient transport structures can be configured to concentrate nutrient transmission near a center region of the mask to provide more nutrient flow near the center region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.