Patent ID: 8623083

Claim:
A system of ophthalmic lenses, comprising a first lens for a first eye of a subject, the first lens comprising a first lens shape having a first base refractive power and a first multifocal diffractive pattern imposed on the first lens shape, the first lens including a first lower optical power and a first higher optical power that is greater than the first lower optical power, the first lower optical power being equal to a sum of the first base refractive power and a first lower diffractive power of a first lower diffraction order of the first diffractive pattern, the first higher optical power being equal to a sum of the first base refractive power and a first higher diffractive power of a first higher diffraction order of the first diffractive pattern; and a second lens for a second eye of the subject, the second lens comprising a second lens shape having a second base refractive power and a second multifocal diffractive pattern imposed on the second lens shape, the second lens including a second lower optical power and a second higher optical power that is greater than the second lower optical power, the second lower optical power being equal to a sum of the second base refractive power and a second lower diffractive power of a second lower diffraction order of the second diffractive pattern, the second higher optical power being equal to a sum of the second base refractive power and a second higher diffractive power of a second higher diffraction order of the second diffractive pattern; wherein the first higher optical power has a negative longitudinal chromatic aberration (LCA) and the second lower optical power has a negative LCA; and wherein the first lens has a LCA that, for light passing through a first cornea of the first eve, reduces and under corrects for a positive LCA of the first cornea when the first lens is placed in or on the first eye, and the second lens has a LCA that, for light passing through a second cornea of the second eye, overcorrects for a positive LCA of the second cornea when the second lens is placed in or on the second eye; wherein the overcorrection and the under correction have a difference of less than 20 percent.