 How To Protect Your Eyes - Takes Only 3 Minutes
When shopping for sun glasses be sure the lenses will protect your eyes from ultraviolet radiation which consists of three bands of invisible sun rays. Absorbed within the lens of the human eye, UVA rays are not known to cause any eye disorders. On the other hand, the rays responsible for sunburn of the skin, UVB, have been known to cause snow blindness (photokeratitis) which is a rare but painful temporary disorder of the cornea. Sun glasses that offer protection from UVA are available.
Cataracts are a clouding of the lens of the eye and many factors might be associated with this happening. Factors such as genetics, age, smoking, gender, nutrition and diabetes are a few that have been associated with cataracts. Association with daily exposure to UVB over an extended period in very bright sunlight without sun glasses has some scientists suggesting this can cause cataracts as well. A good pair of quality sun glasses can help.
The third type of ultraviolet rays is called UVC and known to be absorbed by the upper atmosphere. Since they do not reach the earth, they aren’t significant to the performance of sun glasses.
According to current standards for sun glasses (which are voluntary) all sun glasses must block at least 60% of UVA and 70% of UVB. Our suggestion to best protect your eyes from both of these harmful rays is to only buy sun glasses providing a minimum of 98% protection. Want to know more about UV rays and sun glasses?
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