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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 of smooth surface.

Problems from glare range from annoyance to eye strain to temporary blindness.

Light vibrates along all axis, but when light strikes a reflecing object, such as water or a windshield, 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 fglasses whilel ooking at the same spot, the glare is gone. Now rotate back. You can clearely see the difference.

By reducing glare, polarized sunglasses will prevent strong light from damaging your eyes, reduce eyestrain, and and improve the way you percieve colors and contrast.  

There are two basic types of astigmatism; myopia and hyperopia. These two types affect up to one third of the population and can be treated in a variety of ways from corrective lenses to surgery.

Myopia, or nearsightedness occurs when the eyeball is slightly longer than usual from front to back or the shape of the cornea is too steep. This causes the light entering the eye to come to a focus in front of the retina which results in a blurred distance vision.

Hyperopia, or farsightedness is the opposite of myopia. It occurs when the eyeball is slightly shorter than normal, or the shape of the cornea is too flat. This cause the light entering the eye to come to a focus behind the retina, which results in blurred near vision. Distance vision may also be blurred depending on the severity of hyperopia.