Source : Webster's Revised Unabridged Dictionary (1913)

Xerophthalmia \Xe`roph*thal"mi*a\, n. [L., fr. Gr. ?; ? dry + ?
   the eye. See {Ophthalmia}.] (Med.)
   An abnormal dryness of the eyeball produced usually by
   long-continued inflammation and subsequent atrophy of the
   conjunctiva.

Source : WordNet®

xerophthalmia
     n : abnormal dryness of the conjunctiva and cornea of the eyes;
         may be due to a systemic deficiency of vitamin A [syn: {xerophthalmus},
          {xeroma}, {conjunctivitis arida}]