Vitamin A deficiency is a major public health problem that
affects preschool age children primarily in the regions of Africa
and South East Asia [1]. Inadequate or low intakes of vitamin A
between the ages of 6 and 59 months can lead to vitamin A deficiency
which in severe cases can cause visual impairment, night
blindness as well as an increased risk of illness from infections
such as measles and diarrhoea [2]. World Health Organization
(WHO) regional estimates indicate that the highest proportion of
preschool age children affected by night blindness is in Africa at
2% which is four times higher than estimated rates in South East
Asia at 0.5% [2]. Vitamin A deficiency is among the 19 top risk