Dry Eye Syndrome
"Dry eye syndrome is caused by a chronic lack of sufficient lubrication and moisture on the surface of the eye.
The consequences of dry eyes range from subtle but constant eye irritation to significant inflammation and even scarring of the front surface of the eye."
What Causes dry eye syndrome?
"An adequate and consistent layer of tears on the surface of the eye is essential to keep your eyes healthy, comfortable and seeing well. Tears bathe the eye's surface to keep it moist and wash away dust, debris and microorganisms that could damage the cornea and lead to an eye infection."
Dry eye treatments?
"In many cases, routine use of artificial tears and minor behavioral modifications (taking frequent breaks during computer use, for example) can significantly reduce dry eye symptoms. In other cases, your optician might recommend prescription eye medications and in-office procedures to help your body create and secrete more tears and to decrease eye irritation and inflammation."
Source - All About Vision