Accommodating positive and negative intraocular lens system
US6767363B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0053
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An accommodating intraocular lens system including a higher diopter positive intraocular lens and a lower diopter negative intraocular lens. The positive intraocular lens includes a positive optic portion having an outer peripheral edge and two or more haptic elements. The negative intraocular lens includes a negative optic portion having an outer peripheral edge and two or more haptic elements. Each haptic element is formed to have specific flexibility characteristics so as to be less resistant to bending in a plane generally parallel to an eye's optical axis than in a plane generally perpendicular to the eye's optical axis. The accommodating intraocular lens system is so designed with specific flexibility characteristics to facilitate axial displacement of the positive optic portion with respect to the negative optic portion along the eye's optical axis under a compression force. Through the axial displacement of the positive optic portion with respect to the negative optic portion, accommodative effects are maximized to achieve multi-distance visual imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.