<prompt> Epithelial xerosis of conjunctiva is caused by -TrachomaDiphtheriaXerophthalmiaPemphigus  <response>: Epithelial xerosis: It occurs due to hypovitaminosis -A. Epithelial xerosis may be seen in association with night blindness or as a pa and parcel of the xerophthalmia the term which is applied to all ocular manifestations of vitamin A deficiency which range from night blindness to keratomalacia ref : A K KHURANA OPHTALMOLOGY,E4, page-84 ref img 