Pteryble diagnostic skillz

At surgery clinic today I saw a patient with something in her eye (incidental finding, she was there for an umbilical hernia evaluation). My internal monologue: "Ooh, look! It's a ptery-something! Pterygoid? No, those are in your skull. Pterydactyl? Nope can't be that, those are extinct. Pterygium! Yeah, that's what it is!" Nice to know that obscure medical knowledge is still down in there somewhere.