I once paper cut my eye ball once. Not very deep, just through the clear membrane, but still.
Oh, that reminds me of one ( like I said, I don't consciously notice most of the time. ). Whenever I'm using an X-acto knife, and I hold it blade upward in front of a desk, I get this uncomfortable feeling like for no reason whatsoever, I'm just going to slam my head forward and put it into my eye. It's not even like a suicidal thought, or a fear, just this uncomfortable feeling like I've got some weird imperative to do it, and one day I'm just going to decide,"you know what sounds good? slamming a sharp hunk of metal deep into my eye socket and brain". But I don't actively want to do it, even though the feeling is that it would be an action I'd physically initiate under my own power. It only happens with X-acto knives too. I have a huge number of other knives, blades and assorted pointy objects around my studio and the feeling never occurs like my head is just going to slam forward into it. And of course, I do a huge amount of print-making and stenciling which both require X-acto knives.