Our eyelids, when shut, slide on a compound consisting of oil, water and mucus across the ocular surface of our eyes. Whilst these compounds lubricate the eye, Dry Eye is when the water within that compound evaporates at an accelerated rate, thus meaning the eye becomes “Dry.” This is, however, not the only cause of dry eye, there are a wide variety of factors to include, the second most important being the environment. Environmental factors such as wind, sun, heat, air conditioning and many more all contribute to the severity and volatility of Dry Eye. People with Dry Eye will normally describe their eyes as irritating, scratchy, sore, red or painful.