The cost of a piece of metal in your eye.

Happened to me a few times. Your body has no way to eliminate metal stuck in the cornea. Even rust will work its way in and leave a rust spot. A small sliver of metal will drive you crazy with pain. Stainless is worst since it won't degrade. I always wear goggles whenever using a wire brush or grinding, and usually whenever under the car. Problem is they fog up, even in CA. Worst is trying to use goggles and a mask, that is fog heaven and you can't see a thing. You must go to a doctor to pick embedded debris out.

Skin damage is an easy fix, you can cut out metal and splinters, or just let your body slowly move them to the surface. Since now on a "high deductible" plan, I try to fix things myself. I had a tear above the eye from a bike accident, so I cleaned it, flushed w/ peroxide and iodine, then super-glued together. Healed fine. Looks better than had a doctor left stitch marks.