Lens surface with combined diffractive, toric, and aspheric...

Details Lens surface with combined diffractive, toric, and aspheric... Lens surface with combined diffractive, toric, and aspheric...

A - Human Necessities

61

F

A61F 2/16 (2006.01) G02B 5/18 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2701488

In one aspect, the present invention provides an intraocular lens (IOL) that includes an optic comprising an anterior surface, a posterior surface, and a plurality of diffractive zones disposed on one of those surfaces. The surface having the diffractive zones has a profile characterized by a combination of aspheric and toric components.

L'invention concerne, selon un premier aspect, une lentille intraoculaire (IOL) qui comprend un élément optique comportant une surface antérieure, une surface postérieure et une pluralité de zones diffractives disposées sur une de ces surfaces. La surface ayant les zones diffractives présente un profil caractérisé par une combinaison de composants asphériques et toriques.

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