<prompt> Conjunctival xerosis is seen in -Vitamin A deficiencyHerpetic keratitisGlaucomaNone  <response>: Ans. is a i.e., Vitamin A deficiencyo Xerosis of conjunctiva refers to a condition where the conjunctiva becomes dry and lusterless. Depending upon the etiology, conjunctival xerosis can be divided into two groups : -A Parenchymatous xerosis : - It occurs following cicatricial disorganization of conjunctiva due to local causes which can be : -TrachomaDiphtheric membranous conjunctivitisStevens - Johnson syndromePemphigusThermal, chemical or radiational burnLagophthalmos due to symblepheron.B Epithelial xerosis : - It occurs due to vitamin Adeficiency Xerophthalmia. 