<prompt> Vit A deficiency produces -a Bitots Spotsb Trantas spotsc Keratomalaciad Xerophthalmia e Color blindnessabcadbcacd  <response>: The most characteristic and specific signs of vitamin A deficiency are eye lesions.These develop before the age of 2 years.The term xerophthalmia comprises all the occular manifestations of vitamin A deficiency.Xerophthalmia Dry eye It is a syndrome due to deficiency of vitamin A.a It has following stagesNight blindness Earliest ocular symptomConjunctival xerosis Earliest ocular signBitots spotCorneal xerosisKeratomalacia corneal ulcers 