Sun glasses are not just a fashion statement. They also serve a purpose - protecting your eyes.
Just copied this from a fitness magazine.
"UV rays are invisible, high-energy rays of light that, if absorbed by your eyes, can cause or enhance several eye ailments. This happens because the UV light can cause a reaction in our eye tissue. And once it occurs, it cannot be reversed.
The UV rays can play a large role in the following eye diseases:
Cataract – Clouding of the eye; causes blurring or dimming of vision – UV rays are the largest culprit in the formation of cataracts
Pteryguim – Tissue growth on the whites of eyes; can block vision
Skin cancer – Eyelids and facial skin can develop melanoma
Age-related macular degeneration – Deterioration of the eye’s macula (sensitive center of the retina).
Preventing sunburn
Taking care of your eyes should be a top concern for all no matter the time of the year, but especially during the hot summer months of June, July and August.
Sunglasses provide one of the best sources of UV protection. In order to properly protect your eyes, choose sunglasses that over at least 95 percent UV protection. Also, choose a lens tint that blocks 80 percent of transmissible light, but no more than 90-92 percent of light because lens tint does not protect you from UV rays, and can affect your ability to see correctly. Large lenses that fit close to the eyes are best. Those that block visible blue light are even safer.
Top your head with a hat
The simple combination of a hat and sunglasses can give you all the protection you need to protect those baby blues."