The Bausch & Lomb PureVision® family of is made from balafilcon A, an innovative silicone hydrogel material patented by Bausch & Lomb, with enhanced optical designs and surface properties that provide crisp vision, comfort and health for the demanding and unpredictable lifestyles of today's patients. The PureVision® Multifocal contact lens is  commercially available multifocal contact lens indicated for the correction of nearsightedness (myopia) or farsightedness (hyperopia) for presbyopes.