In 1984, I had aluminium shavings from under a circular saw flick up into both my eyes when I was cleaning the machine. It was horrible and I spent hours at the hospital as they tried to clean out my eyes. I got lucky with no lasting damage.
Long story short: 75% vision in left eye, 40% in right eye. No permanent damage, but will take a few days to heal. No contact lenses for a week and plenty of goopy things to drop into my eyes in the meantime - got one mean abrasion on the right eye. Lucky, all things considered, she said.