This one happened to my brother last spring,it has chaged how i work on cars forever. I will now always wear safty glasses,him and a friend were removing a drive shaft from his truck,the rear u- joint did not want to come out so his friend started hitting it with a hammer to free it while my brother was laying outside the truck. A piece of rust came all the way outside the truck and right though his right eye all the way into his eye socket. He thought it was just something in his eye so they tried getting it out but could not find anything. the next morning he got up with terrible pain in his eye and it was already completely cloudy.so 20k in surgery,no lens in his eye to this day he need to get more surgey this spring for a new lens.he will never have full sight again out of the eye.
And for me,i put a open end wrench though my uper lip while installing a cross member in my monte ss and cracking my tooth,and finding out my girlfriend was pregnant for my first kid 20 minutes later.