Vitamin A deficiency is considered a public health problem if prevalence rate of night blindness in children between 6 months to 6 years is more than -
- night blindness or inability to see in dim light is a manifestation of vitamin A deficiency. - Vitamin A deficiency is considered a public health problem if prevalence rate of night blindness in children between 6 months to 6 years is more than 1 percent. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:616 <\p>
0.01%
0.05%
0.1%`
1.00%
Nutrition and health