Convertible Polarized Bifocal: Our Polarized Bifocal Lenses are made from optical grade polycarbonate and are both impact and scratch resistant. They block 100% of harmful UV rays and are horizontally decentered to eliminate distortion caused by the frame wrap. Polarized Bifocal lenses are designed to block reflected glare from uniform surfaces such as roads, water, etc. They also have a built-in bifocal to help you see close-up objects. We mount the bifocal very low on the lens so that it won’t get in the way of normal sunglass use. Our adjustable nosepieces allow the wearer to adjust the bifocal position to its optimal height. We offer bifocal powers from +1.50 to +3.00.