Patent ID: 8529058

Claim:
A method of correcting vision, comprising the steps of: a) providing a first lens for enhancing vision in one eye of a patient, and b) providing a second lens for enhancing vision in the other eye of the patient, wherein at least one of the first or the second lenses is a multifocal lens, and the first and the second lenses exhibit different focusing characteristics so as to provide the patient with a binocular visual performance in a selected range, the binocular visual performance being related to a visual performance of the first lens and the second lens in accordance with the following relation: B = ( L kl + R kr ) 1 kb wherein, B denotes the binocular visual performance, L denotes the visual performance of one of the lenses, R denotes the visual performance of the other lens, and kl is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4, kr is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4, kb is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4, and wherein each of the visual performances of the first lens and the second lens is characterized by image contrast.