Wednesday, June 8, 2011

Summer time calls for sunglasses!

The range of energy that makes up visible light is just a small portion of the electromagnetic spectrum so integral to modern life. Ultraviolet radiation comprises invisible rays that can damage the eyes, burn the
skin and cause skin cancer. UV radiation that reaches the Earth’s surface is made up of two types of rays -- ultraviolet A (UVA) and ultraviolet B (UVB). UVA is weaker than UVB but passe further into the body’s tissue than UVB. It is now generally accepted that both UVA and UVB cause skin cancer and can damage the eyes.  For this reason, eye protection and sunscreens are recommended that block both kinds of radiation.

Sunglasses should be worn year-round for protection and performance. Whether they're wraparounds, rimless or studded with rhinestones, sunglasses are vital for shielding eyes from harmful ultraviolet (UV) rays and diminishing glare that can cause distractions while driving, working and playing.
As a baseline, all sunglass lenses should filter UVA and UVB rays. Other lens options are also available based on personal preference, like polarized lenses, to prevent glare or tints that offer more comfortable vision.

Alternatives to traditional sunglasses are also available, including larger frames that fit over prescription glasses, clip-on sunglasses, flip-up lenses and photochromic lenses which change from dark outdoors to clear indoors.

CHECK OUT THE COMPLETE REPORT ON UV INDEX ACROSS OUR NATION AT
http://www.thevisioncouncil.org/sunglasses/

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