It is extremely important to protect your eyes against the harmful UV rays of the sun. For most people an inexpensive pair of sunglasses will do the job.
The sun produces different types of light. The most harmful to your eyes are ultraviolet, or UV rays, bright or intense light and blue light.
UV rays carry more energy than visible light rays. The eye is at a greater risk from absorbing UV radiation than from any other type. UVA and UVB are the types of UV lights that reach the earth from the sun.
Blue light is visible light. Typically blue light is found in reflections off of snow and water. Blue light prevents the eyes from focusing properly and routine exposure to blue light over many years may age the eyes and increase the risks of blindness.
When your eyes absorb light, the eye tissue is affected by heat and chemical reactions. These reactions can cause permanent damage if they eye becomes overwhelmed and the natural ability to heal itself is compromised.
Eyes that are overexposed to UV radiation can suffer damage to the front portion. The retina can be damaged if you stare directly into the sun, even briefly, and can cause permanent loss of vision.
UV radiation, wind, and dry eyes can cause a temporary, but uncomfortable condition called snow blindness. All of these reasons are why it is so important to wear sunglasses whenever you are exposed to the suns rays. You want the highest amount of UV protection you can get.