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What is Epithelial xerosis of conjunetiva is caused by ? and explain in detail?
Ans. is 'c' i.e., Xerophthalmia 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 symblepheron. Epithelial xerosis : - It occurs due to vitamin 'A' deficiency (Xerophthalmia).