Accommodative IOL with dynamic spherical aberration
US7998198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2009 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Nov 1, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/1648
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is generally directed to accommodative intraocular lenses (IOLs) that exhibit a dynamic spherical aberration as a function of accommodative power. By way of example, in one aspect, the present invention provides an intraocular lens (IOL) having an anterior optical element, a posterior optical element, and a mechanism for coupling the anterior and posterior elements so as to allow axial movement of those elements relative to one another for providing accommodation when the lens is implanted in a patient's eye. Each of the anterior and the posterior elements includes at least one aspherical surface, where the asphericities of the surfaces are adapted to provide a combined spherical aberration that varies with accommodation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.