Close that eye of yours!

So today i had this patient whose eyes were closed while i was cleaning his teeth. Well, one was closed and the other one was slightly open. That's just kind of creepy to me. How hard is it to keep both your eyes closed. I couldn't tell if he was actually looking at me or not. It makes me think of that Edgar Allen Poe story, which if i remember correctly, this guy is so terrorized by the eye of this old man that he decides to kill him( it has been a long time since i read that story so that could be totally wrong). Anyway, that one opened-eyed man gave me the creeps!