Night blindness

If a child cannot see well in din light,it is called night blindness.It can also be seen in adults while they experience difficulty in reading or driving the car in dim light.It is mainly caused due to the deficiency of vitamin 'A' in food we take.An infant may get this disease if the mother has vitamin 'A' deficiency.It is common in regions where the vitamin 'A' intake is inadequate.
Symptoms:
1)The children cannot see objects in dim light.
2)They do not move from one place to other especially in the evening.
3)The conjunctiva is dry and wrinkled.
Prevention:
1) The children must be prevented from gastrointestinal diseases.
2)The rules of personal hygiene must be followed.
3)Food containing vitamin 'A' is found in dark green leaf vegetables,pumpkin,carrot,papaya,mango,egg,fish,meat,milk.Beside these vitamin 'A' capsule is also available.