The American Optometric Association has recomm...
Looking for the perfect sunglasses? If you drive or spend time outdoors, polarized lenses can give you clearer vision by enhancing contrast and eliminating glare.
Glare is caused when light bounces off a smooth surface. Problems from glare range from annoyance to eye strain to temporary blindness.
Light vibrates along all axis. But when light strikes a reflecting object, such as water or a highway, a high percent of light waves bounce off in similar horizontal angles.
Polarized lenses contain microscopic vertical lines that effectively cancel out the horizontal waves—thereby reducing glare.
Select a pair of polarized glasses from the display rack. Find a bright glare on the floor, or tabletop. Next, look at the glare through the glasses. The glare is gone. Rotate the glasses sideways while looking at the same glare. Now rotate back. You can clearly see the difference.
By reducing glare, polarized sunglasses will prevent strong light from damaging your eyes, reduce your eye strain, and improve the way you perceive colors and contrast.
