Patent ID: 8906089
Filing Date: 2014-12-09
Classification: A61B,A61F,G01J,G02C

Abstract:
1. A diffractive, multifocal intraocular lens for treatment of an eye of a patient comprising: a diffractive pattern and at least one non-spherical surface; the lens having one base focus comprising a far-field focus and at least one additional focus comprising at least one of a near-field focus and a mid-field focus; wherein the lens is configured to reduce, when implanted in the patient's eye, a chromatic aberration of the eye for the at least one additional focus; and wherein the at least one non-spherical surface is configured to alter, for at least one of the foci, a shape of a light wavefront passing through the lens; the alteration to the wavefront being characterized by a change of at least one spherical wavefront aberration term of a polynomial expression describing the wavefront; in which the change in the at least one spherical wavefront aberration term offsets, at least partly, a mean value of that spherical wavefront aberration term based on corneal measurements of a selected group of people.