While any sunglass lens that meets the standards set by the American National Standards Institute will protect the eyes from the sun’s harmful rays, polarized sunglass lenses also block the annoying glare produced by reflected sunlight. This feature can best be appreciated around snow or water; however, you don’t have to be a skier or a fisherman to like polarized lenses. Just try driving on a sunny day, and notice how much glare reflects off the road surface, the windshields of other vehicles, and the dashboard of your own car. Glare is a particular problem in the early morning or late afternoon, when the sun is low on the horizon. Polarized lenses eliminate these sources of glare. People who are light-sensitive, including post-cataract surgery patients and those who are continually exposed to bright light through windows, can also benefit from wearing polarized sunglasses. Aside from providing added comfort, polarized lenses are also a safety feature.