Can you tell me about improving thier vision naturally?

Make sure you have a: healthy diet, don't smoke or drink, and eat a lot of organic vegetables, and supplements specific for the eyes that are very good. There are EyeVitamins available, and make sure to wear sunglasses when out in the sun. High vitamin C protects the lenses naturally. Exercise helps with blood flow to the head and eyes. So, basically, a healthy, balanced lifestyle will also help your eyes!