Multifocal lens having reduced visual disturbances

Abstract

Abstract An ophthalmic lens comprises an anterior surface having an anterior surface base curvature and a posterior surface having a posterior surface base curvature. The anterior surface base curvature and the posterior surface base curvature are adapted to provide a base power defining a first focus corresponding to a first focal length and a first spherical aberration corresponding to the first focus. A diffractive structure disposed on one of the anterior surface and the posterior surface, the diffractive structure is adapted to split light between the first focus corresponding to the first focal length and a second focus corresponding to a second focal length and provide a second spherical aberration corresponding to the second focus. The second spherical aberration has an opposite sign relative to the first spherical aberration and provides a third spherical aberration corresponding to a third focus. A magnitude of the third spherical aberration is less than a magnitude of the second spherical aberration. Abstract An ophthalmic lens comprises an anterior surface having an anterior surface base curvature and a posterior surface having a posterior surface base curvature. The anterior surface base curvature and the posterior surface base curvature are adapted to provide a base power defining a first focus corresponding to a first focal length and a first spherical aberration corresponding to the first focus. A diffractive structure disposed on one of the anterior surface and the posterior surface, the diffractive structure is adapted to split light between the first focus corresponding to the first focal length and a second focus corresponding to a second focal length and provide a second spherical aberration corresponding to the second focus. The second spherical aberration has an opposite sign relative to the first spherical aberration and provides a third spherical aberration corresponding to a third focus. A magnitude of the third spherical aberration is less than a magnitude of the second spherical aberration. 20 24 22 70 40 02 O ct 2 02 4 2 0 2 4 2 2 7 0 4 0 0 2 O c t 2 0 2 4

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