I would say that the majority of my clients are nearsighted. This means that the eye is measured as being too long in normal eye medicine. The person had trouble seeing clearly far away. I wonder why these persons are interested in improving their vision compared to say farsighted people. The first step in dealing with nearsightedness is to accept that this is not a problem. The change in the eye ball is a reflection of a certain mind perceptual attitude. It is more comfortable to look and be inward. So spend time being inside yourself and observe when you feel the need to leave the connection to the outer world.
Take off your glasses in these moments. If you are looking close by, notice that your view is quite clear. Go into the distance and feel what it is like when you confront you unclearness. I have attached a file of a paper on nearsightedness I published.