Hey,
Sorry to respond so late to this.. I had something similar happen to one of my geckos. It was shed skin, not sure if it was infected or not. I used some saline solution, put a drop or 2 in his eye and that loosened it up. Then VERY VERY carefully removed it with tweezers. I tried a cue tip at first and that just moved it around in the eye. It actually happened in both his eyes so I got to practice removing stuff twice! but he is doing fine now. Good luck!