UV Safety

HealthWatch for July 2008
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Sunlight contains ultraviolet (UV) radiation that can damage our eyes and skin. Ultraviolet A (UVA) is responsible for premature aging, wrinkles, and tanning, while ultraviolet B (UVB) causes sunburns.  Harmful UV rays are more intense in the summer, at higher altitudes, and closer to the equator; rays are also intensified when reflected off of water, snow or sand.

Effects on Eyes
Excessive exposure to UV rays may be linked to the development of cataracts and age-related macular degenerations.  Intensive exposure can also cause “sunburn” on the surface of the eye.  Be sure to shield your eyes with sunglasses offering 99-100% protection from UV rays, and a wide-brimmed hat. 

Effects on Skin
Both types of UV rays can severely damage skin and cause skin cancer.  When outdoors, apply water-resistant sunscreen with a Sun Protection Factor (SPF) of at least 15 . . . and re-apply sunscreen every two hours especially after swimming or sweating. When possible, wear protective clothing, such as a long-sleeved shirt and long pants.  Remember to seek shade when appropriate, especially between 10:00 a.m. and 4:00 p.m when the sun’s rays are the strongest. 

Resources

Local
Cleveland Clinic

National
American Academy of Dermatology
American Academy of Ophthalmic Executives