Orange-colored fruits and vegetables -- like sweet potatoes, carrots, mangos, and apricots, oranges are high in beta-carotene, a form of vitamin A that helps with night vision, and your eyes' ability to adjust to the darkness. Eating green leafy vegetables such as spinach and kale are rich in both vitamins C and E.  These vitamins also play a crucial role in improving eyesight.  Salmon, eggs, broccoli, etc, are also some of the major foods that you should add to your diet.