Toric small aperture intraocular lens with extended depth of focus
US11464625B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jan 4, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0071
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intraocular lens is provided that includes a refractive element and a mask. The refractive element has a first power in a first meridian and a second power greater than the first power in a second meridian. A magnitude of the first and second powers and a location of the first and second meridians are configured to correct astigmatism in a human eye. The mask is configured to block a substantial portion of light from passing through an annular region thereof and to permit a substantial portion of light to pass through a central aperture thereof to enhance an astigmatism correction rotational misplacement range and depth of focus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.