The eyesight will never get better naturally, only when you get older, the prescription for nearsightedness would be counterbalanced by the prescription for nearsightedness, that is to say, the power would be lower. Why not do the lasik surgery so that you don't have to wear glasses all life? It is commonly used and quite safe.
Eyesight rarely get better natually. As we get older, the eyesight is changing just like our body. so it is diffficult to get back to its original shape. To the eye muscles, it is also difficult to get back to the correct shape to focus, so we need glasses all the time to help me see things clearly.