Dry eye syndrome is caused by a chronic lack of sufficient lubrication and moisture on the surface of the eye. Consequences of dry eyes range from subtle but constant eye irritation to significant inflammation and even scarring of the front surface of the eye.
Dry eyes are very common, and dry eye syndrome is a major reason for visits to the eye doctor.
Dry eye syndrome or Keratoconjunctivitis sicca (KCS), is a frequently encountered ocular problem. Dry eye syndrome is a clinical condition characterized by deficient tear production or excessive tear evaporation resulting in ocular discomfort. In addition to the term dry eye, which is now established worldwide, the specific term “ocular surface and tear disorder” has been suggested by Tseng and Tsubota.