Why do my vision get worse at cloudy days or night?

[Earl Park]

I have good vision in the sunny days, but when it is cloudy or at night, I can hardly see things clear. What is the problem?

[Earle]

Maybe you have got night blindness which is caused by the lack of vitamin A. However, you should go to see an doctor and have a check. The doctor will give you a careful exam.

[Earlham]

It sounds like you are having night blindness and can be caused by deficiency of Vitamin A. Try to take in food high in Vitamin A such as carrots. But if you are born with night blindness, there is little chance that it can be cured.