At Eyeglassdirect.com our Bifocal Flat-Top 28 Polarized Polycarbonate Sunglass Lenses are manufactured using the same high quality polycarbonate material as our standard lenses, with ultraviolet filter and scratch resistant coating. Bifocal Flat-Top 28 provide you with clear, sharp distance and reading vision.
A polarized filter is produced by stretching a thin sheet of polyvinyl alcohol to align the molecular components into parallel rows. The material is then passed through a solution of iodine. The iodine molecules alight themselves along these parallel rows. In a polarized lens, the rows are oriented vertically in order to maximally reduce the horizontally reflected light.
Polarized Polycarbonate Lenses are high recommended for people who enjoy skiing, boating, fishing, and many other outdoor activities. They also make great driving sunglasses (especially at dusk).
Prescription recommendation: (+6.00/-8.00)