Is it possible to improve your eyesight by eating foods rich in certain essential vitamins or by doing certain exercises?
Yes and no, exercises doesn't help improve your eyesight. your right about certain foods. You have to eat plenty of greens, veggies carrots and fruits.
There are no exercises that effectively improves your vision. The only foods shown to help vision are those rich in vitamin A which are needed for night vision such as carrots and other orange foods that contain carotene which the body converts to vitamin A.
Yes, carrots are scientifically proven to be packed with vitamin A, and are also proven to improve eyesight, especially nocturnal eyesight. IN other words: they help you see in the dark. Remember, the brighter and/or colorful the vegetable, the better it is for you