Epithelial xerosis of the conjunctiva is caused by -: (A) Trachoma, (B) Diphtheria, (C) Xerophthalmia, (D) Pemphigus
Answer is C. Ans. is 'c' i.e., Xerophthalmia Xerosis of conjunctiva o 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 : - Parenchymatous xerosis : - It occurs following cicatricial disorganization of conjunctiva due to local causes which can be : - Trachoma Diphtheric membranous conjunctivitis Stevens - Johnson syndrome Pemphigus Thermal, chemical or radiational burn Lagophthalmos due to symblepharon. Epithelial xerosis: It occurs due to vitamin 'A'deficiency (Xerophthalmia).