Multifocal intraocular lens

G - Physics – 02 – C

Patent

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Details

G02C 7/06 (2006.01) A61F 2/16 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2741158

An intraocular lens for providing a subject with vision at various distances includes an optic having a first surface with a first shape, an opposing second surface with a second shape, a multifocal refractive profile, and one or more diffractive portions. The optic may include at least one multifocal diffractive profile. In some embodiments, multifocal diffractive and the multifocal refractive profiles are disposed on different, distinct, or non-overlapping portions or apertures of the optic. Alternatively, portions of the multifocal diffractive profiles and the multifocal refractive profiles may overlap within a common aperture or zone of the optic.

L'invention concerne une lentille intraoculaire multifocale destinée à fournir à un sujet une vision à diverses distances qui inclut une optique possédant une première surface d'une première forme, une seconde surface opposée d'une seconde forme, un profil réfractif multifocal, et une ou plusieurs parties diffractives. L'optique peut inclure au moins un profil diffractif multifocal. Dans certains modes de réalisation, les profils diffractifs multifocaux et réfractifs multifocaux sont disposés sur des différentes parties ou ouvertures distinctes ne se chevauchant pas de l'optique. Sinon, les parties des profils diffractifs multifocaux et les profils réfractifs multifocaux peuvent se chevaucher dans une ouverture ou une zone commune de l'optique.

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