Bifocal intraocular lens

摘要

The invention relates to a diffractive multifocal intraocular ophthalmic lens adapted to replace the natural lens of a patient's eye. The lens includes a diffractive pattern and produces one base focus and at least one additional focus and has at least one nonsphercial surface. The lens is configured so chromatic aberration is reduced in a near focus as a result of the diffractive pattern and spherical aberration is reduced as a result of the nonspherical surface.