Well, if you have any eye condition or eye problem and you want to treat it, then you have to realize that your mind plays an important role. You have to understand that there is something in your life that you don't want to see, so your eyes are filtering it out.
It might be the details of your life, missed opportunities or embarrassments that lead you to black out details, so you need reading/magnifying glasses to regain your eyes for detail.
Or you might not want to or can't see your future, which leads to problems in your distant vision, leaving you nearsighted and with myopia.
There are many things we don't want to see in our lives, all the things that come up in thoughts when we are by ourselves and feel regret, resentment, or grief.
If you don't learn to deal with these issues, your eyesight will get worse and worse until you are "blinded" enough not to see the stuff on a daily basis anymore. If you want to improve your vision naturally, or in any way at all, then you have to look at these things.