Bausch and Lomb Purevision are designed to give you healthy eyes, outstanding comfort and visual quality. These lenses feature an innovative optical design providing amazing detail and crisp, clear vision, even in challenging light conditions such as wearing your contacts while driving at night. Purevision contact lenses are available for near-sightedness, far-sightedness and astigmatism. There is even a Purevision lens available if you need bifocals – the Purevision Multifocal. The Purevision lens helps to provide the crispest possible vision by correcting spherical aberration. The result is pure, rich contrast and highly refined detail. PureVision lenses use the patented Aergel material, and feature a revolutionary surface with precision-crafted contours for outstanding health and comfort. The design is intended to increase oxygen flow to your eye, repel the debris that accumulates on a contact lens, stay moist. The Aergel material in Purevision lenses provides natural levels of oxygen to your eyes – almost like not wearing lenses at all. Aergel offers remarkable elasticity and with the help of the unique surface actually resists dirt and debris – two common causes of discomfort and irritation. The Aergel material and Performa surface process in Purevision lenses help your lenses stay moist – all day long. Purevision lenses are made with thin rounded edges for a great fit. Their carefully crafted contours help ensure long-lasting reliable comfort.