Hi Tenisista, was you going to say masturbating, then no, but over masturbating can give your health lots of problems, it can give eye problems, it will make your hair go very dry, and over mastur bating can lead to ED and if your doing it ti porn then you can get porn enduced ED.
But us do love playing with our selfs, witch leads to masturbating when we are alone, well we had nothing else to do, so just pleasure our selfs.
But its when you overdo things that it will affect your life.
Good Luck
You question is incomplete. Member who wants to reply should have more info. If your query is about masturbation,please be assured that you will not go blind due to masturbation. It is harmless if you do it in limit.It is a natural habit.