The first sign of Vitamin A deficiency is
Modified classification WHO (Xerophthalmia) XN: Night blindnessXIA: Conjunctival xerosis XIB: Bitot's spotsX2: Corneal xerosisX3A: Corneal ulceration/keratomalacia less than 1/3rd corneal surfaceX3B: Corneal ulceration/keratomalacia equal to or more than 1/3rd corneal surface XS: Corneal scarXF: Xerophthalmia fundus.
Conjunctival xerosis
Corneal ulcer
Keratomalacia
Bitot's spot
All India exam