Bausch + Lomb PureVision Multi-Focal contact lenses feature an innovative optical design allowing you to see clearly at all distances - near, far, and everywhere in-between.Breakthrough technology, great convenience and supreme comfort have made PureVision contact lenses a preferred choice among contact lens wearers around the world.Only multifocal lens available in a silicone hydrogel material.Made of AerGel, a revolutionary material designed to deliver extraordinary comfort and health.Monthly replacement schedule.PureVision Multi-Focal lenses are designed to give you more freedom than your current bifocals or reading glasses, with no need to move your head up and down or look a particular way to see. The optical design of PureVision Multi-Focal enables your eye to instinctively find the zone that provides optimal focus. The gradual transition zones let you see everything clearly and effortlessly at any distance.