Apodized hybrid diffractive-refractive IOL for pseudo-accommodation

Abstract

In certain embodiments, an ophthalmic lens comprises an optic. The optic has an optical axis and surfaces comprising an anterior surface and a posterior surface. At least one of the surfaces has an inner refractive region and a refractive-diffractive structure disposed outwardly from the inner refractive region in a direction away from the optical axis. The inner refractive region is adapted to contribute refractively to a distance focus optical power. The refractive-diffractive structure comprises one or more diffractive regions and one or more refractive regions. A diffractive region is adapted to contribute diffractively to a multi-zone optical power, and a refractive region is adapted to contribute refractively to the distance focus optical power.

Description

technical field [0001] The present disclosure relates generally to ophthalmic lenses, and more specifically to apodized hybrid diffractive-refractive intraocular lenses (IOLs) for pseudo-accommodation. Background technique [0002] An IOL may be implanted in the eye to replace the natural lens during cataract surgery. The ciliary muscle changes the refractive power of the natural lens to provide accommodation for viewing objects at different distances from the eye. However, many IOLs provide monofocal capabilities without providing accommodation. Certain multifocal IOLs provide distance power as well as near power (eg, through the use of diffractive structures) to create some degree of pseudo-accommodation. Contents of the invention [0003] In certain embodiments, an ophthalmic lens includes optics. The optic has an optical axis and surfaces including a front surface and a back surface. At least one of the surfaces has an inner refractive region, and a refractive-diff...

AI Technical Summary

Problems solved by technology

However, many IOLs offer monofocal capabilities without accommodation

Images