Intermediate vision with phakic multifocal optics utilizing residual accommodations
US8100527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2008 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Dec 9, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/1654
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In one aspect, the present invention provides a method of correcting vision, which comprises determining a residual accommodation exhibited by a natural, crystalline lens of an eye, and selecting a multifocal intraocular lens (IOL), which exhibits a far-focus optical power (e.g., in a range of about −15 to about +50 Diopters (D)) and an add power (e.g., in a range of about 1 D to about 4 D), for implantation in the eye while retaining the natural lens. The add power of the IOL is selected as a function of the residual accommodation such that a combination of the IOL and the natural lens provides a visual contrast greater than about 10% at a spatial frequency of about 20 cycles/degree for viewing objects at a distance greater than about 30 cm from the eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.