I do this too. Sometimes, when my fiance and I are driving places, I get these visions about getting into a horrible car accident and my fiance dying. I think about what the police would say to me, the trip in the ambulance, finding out he was dead, having to tell his Mom, how she would react, etc. I just make myself bawl thinking about it but I can't stop doing it.

I also think a lot about being attacked by sea creatures and being unable to escape because I am not a strong swimmer. When I think about that, it is so hard to breathe because I can not breathe underwater. (well, no one can but you get the idea)

Those are just two examples, but I have quite a few thoughts like these, strangely enough including the paper cuts on the eyeballs one.

I just sort of chalked it up to me being an incredibly morbid person who likes to upset myself and always assumes the worst. Never really considered that it could be a symptom of something.