Recently I noticed that my right eyelid is slightly puffy. As I was looking at my eye, I pulled back the corner of my right eyelid and discovered a dark, black-ish looking bump on the inside of my lid. It is not visible from the outside, as it tucks a little bit into my skull , if you know what I mean. But when I stretch my eyelid (see picture below), it is very apparent. I have googled this to DEATH and cannot find anything. This bump is dark and does not hurt at all. It is just a little bothersome and curious. Thank you