A well-balanced diet can help provide these essential nutrients and thus help boost eye sight, maintain eye health Eat plenty of citrus fruits and berries, they are refreshing and make for a good snack. One cup a day of any of these colourful fruits and veggies are sure to help sustain healthy eyesight. Tips for Healthy Eyes and Vision. Start with good eating habits as early in life as possible. If you consume a balanced diet already in your teens, it’s less likely you will develop Ive been eating goji berries, n my eyesight had improved significantly, im no longer in need to wear my eyeglasses.