What is keratoconjunctivitis sicca?

Option D

Keratoconjunctivitis sicca, also called dry eye disease (DED), dry eye syndrome, and dysfunctional tear syndrome is a chronic condition in which a person has inadequate lubrication and moisture on the surface of the eye. It is a result of either decreased tear production, increased evaporation of moisture from the eye's surface, or both. In severe cases, dry eye disease can impact vision, daily tasks, and social and workplace functioning.