Patent ID: 8882265
Filing Date: 2014-11-11
Classification: G02C

Abstract:
1. A batch of multifocal contact lenses for improving vision of presbyopic subjects, comprising: a plurality of multifocal contact lenses, each of said multifocal contact lenses comprising an optic zone having a radius extending from an optic zone center to an optic zone perimeter spaced radially away from the optic zone center and defining a boundary between the optic zone and a peripheral zone, said optic zone having an aspheric power profile extending from the optic zone center towards the optic zone perimeter and providing a near vision refractive power and a distance vision refractive power such that the optic zone of each of said multifocal contact lenses has an Add power, said Add power being the absolute difference in power between the near vision refractive power and the distance vision refractive power; said plurality of multifocal contact lenses comprising a plurality of first multifocal contact lens groups, each first multifocal contact lens group comprising multifocal contact lenses providing a unique single distance vision refractive power for the first multifocal contact lens group,