Patent ID: 8801781
Filing Date: 2014-08-12
Classification: A61B,A61F

Abstract:
1. An intraocular lens having an optical power and a shape factor for implantation in an eye of a patient in which the natural lens has been removed, the eye having a cornea, a retina, and an axial length defined by a distance between the cornea and the retina, the cornea having a radius of curvature and a coma, the coma having a sign, comprising: an anterior surface having an anterior radius, Ra; a posterior surface having a posterior radius, Rp; and an aspheric surface on at least one of the anterior surface and the posterior surface, wherein the aspheric surface reduces spherical aberration of the cornea; wherein the anterior radius and the posterior radius determine the optical power and the shape factor; wherein the shape factor is negative, with a lower limit of about −3; wherein the intraocular lens has a coma based on the shape factor, the intraocular lens coma having a sign opposite to the sign of the cornea coma; and wherein the optical power of the intraocular lens is between 0 diopters and 30 diopters selected from the group consisting of 5 diopters, 10 diopters, 15 diopters, 20 diopters, 25 diopters, and 30 diopters; wherein the intraocular lens with an optical power of 5 diopters has a shape factor between about −3 and about −2.2; wherein the intraocular lens with an optical power of 10 diopters has a shape factor between about −1.9 and −1.5; wherein the intraocular lens with an optical power of 15 diopters has a shape factor between about −1.3 and −1.1; wherein the intraocular lens with an optical power of 20 diopters has a shape factor between about −1.0 and −0.8; wherein the intraocular lens with an optical power of 25 diopters has a shape factor between about −0.8 and −0.7; wherein the intraocular lens with an optical power of 30 diopters has a shape factor between about −0.6 and −0.5; and wherein the coma of the intraocular lens minimizes the coma of the cornea when light passes through both the cornea and the intraocular lens sequentially.