Extended depth of focus intraocular lenses and associated methods

Abstract

An intraocular lens has a monofocal lens body that defines a focal length and is configured to add more higher order aberration (HOA) to an eye than a spherical IOL with the same focal length. The lens body defines an optical center, an outer edge, a first region that extends from the optical center to a radius between the outer edge and the optical center, and a second region located radially outward of the first region. The second region is configured to reduce the longitudinal HOA that would otherwise occur in low light conditions. The lens body may be configured to create a higher order aberration to normalized radial distance ratio (HOA-NRD ratio) profile that increases in slope as NRD increases within at least a portion of the first region and does not increase in slope as NRD increases within at least a portion of the second region. The HOA may be a spherical aberration, trefoil or coma.

Dependencies are inferred from the claim text.