SUNGLASSES

This is used by all to prevent themselves from the harmful rays of the sun. Sunglasses not only prevent us from these harmful effects of sun light and ultraviolet rays.It also act as a normal glass that we will use to correct the eyesight. It has the lenses which is polished with some special coating to protect our eyes. This coating can be done through two ways. One is transparent and the second is coted with some special chemicals.The second is done to uv-filtering lenses. This is very effective and has a good use to protect our eyes from sunlight.The coating can be made either in the front side of the lens or at the back side or on both the side of the lens.
AS WE KNOW THAT, UV IS ONE OF THE HARMFUL RAY WE CAN USE THIS SUNGLASSES,WHERE IT REFLECTS AWAY THE UV COMPLETELY AND PROTECT OUR EYES.