<prompt> In the UIP, blindness can be prevented by the administration of-Measles vaccinesRubella vaccinesBCG vaccinesDiphtheria vaccines  <response>: Amongst the respiratory tract infection, measles is related to malnutrition.It is related to malnutrition in both ways, i.e. -Measles tends to be more severe in the malnourished child.In a healthy child, measles precipitates malnutrition.That means measles predisposes malnutrition and vice versa.All cases of severe measles and all cases of measles in areas with high case-fatality rates should be treated with vitamin A, as many children develop an acute deficiency of vitamin A, which may lead to keratomalacia and blindness from corneal scarring.So, vitamin A should be administered along with the measles vaccine.A high dose of vitamin A is given immediately on diagnosis of measles and repeated the next day. The recommended age-specific daily doses are 50,000 IU for infants aged 6 months, 100,000 IU for infants aged 6-11 months, and 200,000 IU for children aged 12 months. If the child has clinical signs of vitamin A deficiency Such as Bitots spots a third dose should be given 4-6 weeks later. 