You might rub your eyes when you're anxious or stressed, when you wake up in the morning or even when you sleep. For most people, an occasional gentle rub is nothing to worry about, rubbing your eyes stimulates tears to flow and lubricates dry eyes, removing dust and other irritants. But if you rub your eyes too hard, too often or over a long period of time, you could get into trouble, when you are rubbing your eyes, bacteria which on your hands infected directly into your eyes, may cause corneal inflammation, etc. Nowadays, the cause of keratoconus is still not known,but some researchers believe that genetics can be a role. So, it basically has nothing to do. Answer for you is my pleasure, thank you!