The truth: Carrots are a great source of Vitamin A, which is known to improve night vision. However, a person doesn’t need to eat massive amounts of carrots to get their Vitamin A, since they can receive it from various other foods. It is important though to combine carrots with some sort of fat in order to absorb all the Vitamin A you can. Bottom line is that carrots will help keep your eyesight in good condition, but they can’t improve it or bring it back.