Replying to Can you go Blind From Masterbation??

Okeeey, so my friend and I are having an argument. He tells me you can go blind from masterbating too much.  I suppose it could take a bunch of protiens out off your eyes and shit and eventually happen, or you could accidentally give a really nasty shot to your own eye. Either way i think its highly unlikely. I am fully serious about this though, i have heard it somewhere else too......So has any one else heard of this rumour? Better yet, has anyone gone blind from masterbating too much?    oddly enough my vision is kinda hazzy right now.