Polarized sunglasses are designed to reduce glare from surfaces such as water, snow, and glass. Glare distorts the true color of objects and makes them harder to see. Glare isn't just annoying. It can be dangerous, especially when you're driving. Sun glare has been linked to pedestrian deaths and other traffic accidents. Polarized sunglasses can help drivers and athletes see more clearly and avoid hazards. This article explains how polarized lenses work. It also outlines some of the benefits and drawbacks of this kind of eyewear.