Patent ID: 8777415
Filing Date: 2014-07-15
Classification: G02C

Abstract:
1. A method of prescribing multifocal contact lenses to a presbyopic subject, said presbyopic subject having a dominant eye and a non-dominant eye, said method comprising: fitting a presbyopic subject, said presbyopic subject requiring an Add power correction of at least 1.25 diopters (D), with a pair of multifocal contact lenses, wherein a first multifocal contact lens of the pair comprises a first aspheric power profile derived from a first nominal aspheric power profile, and a second multifocal contact lens of the pair comprises a second aspheric power profile derived from the first nominal aspheric power profile, but said second aspheric power profile providing a distance vision refractive power offset by about +0.25 D to about +1.25 D relative to the distance power correction for the non-dominant eye of the presbyopic subject, whereby monocular distance visual acuity is different for each eye with each contact lens, and binocular summation is maintained when each contact lens is simultaneously worn.