<prompt> Under National Programme for Prevention of Nutritional Blindness, a child in the age group of 6-11 months is given a single dose of vitamin A is:March 200550,000 IU1,00,000 IU1,50,000 IU2,00,000 IU  <response>: Ans. B: 1,00,000 IUNutritional blindness which affects over seven million children in India per year results mainly from the deficiency of vitamin A coupled with protein-energy malnutrition.In its severest form, it often result in loss of vision.Vitamin A deficiency is assessed on the basis of conjuctival xerosis and Bitots spot. 