Most of you are aware of the harm UV radiation can pose to your skin, but what about the harm that can come to you eyes??
What you need to know....
There are three kinds of UV radiation:
UV-C: absorbed by the ozone and posing little or no threat to your eyes
UV-B: absorbed easily by the cornea (clear front covering of your eyes) often responsible for sunburn and snow blindness
UV-A: easily transmitted to the crystalline lens and back to your retina - putting you at risk for premature cataracts and early Age Related Macular Degeneration (ARMD). Note that ARMD is the number one cause of blindness in the over 60 population.
What can you do to ensure adequate protection?
Is price of your sunglasses of any consequence?
Maybe. Sunglasses made of lower quality materials compromise your optical quality. Try this test: focus a vertical line thru the sunglasses and look for any "wiggling" of the line. This could be an indication of an optical defect in the lenses.
Does polarization add to UV protection??
Our optical at Lunettes du Monde Optometry in Berkeley carries a wide range of prescription and non-prescription high quality sunglasses with full UV protection,both with and without polarization. We carry Maui Jim, Ray Ban, and a variety of sunglasses lines.