One of the top reasons for night blindness is lack or deficiency of Vitamin A. As the name suggests, night blindness is a condition which causes blindness during the nights. After the natural light is gone, a person finds it difficult to see in the dark. Even if there is artificial lighting present, the person may be unable to see anything.
Several people think that night blindness is a condition that starts in the evening and ends in the morning. This condition can be cured by tackling Vitamin A deficiency. The scientific name of night blindness is nyctalopia.
People, who suffer with this condition, cannot see images that are contrasting in the nights, or when the light is low. Prolonged night blindness can eventually lead to complete blindness. The retina needs a substance called rhodopsin to see in the night. A complete lack of this substance can cause night blindness. One good way to get this compound is consuming a lot of Vitamin A. This particular vitamin helps to create the required compound in retina.
There are quite a few types of night blindness. They are as follows:
The congenital stationary night blindness is the type that is present from birth. This is an inherited type of disease that can be passed on through genes.
Progressive night blindness is the type that continues to get worse as time passes. One of the main reasons for this type of night blindness is Vitamin A deficiency. Some drugs like quinine that is used to treat malaria also can cause this condition.
A new revelation is that people, who go under the knife for obesity surgery, may suffer from night blindness later.
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