"Dented" eye?

My ball has a little "dent" on her left eye.
Any ideas on what it is?

Low humidity, spray the cage down and youll see it pop out within a few hours

Also, when was the last shed? Did your snake just shed or recently went blue? I've seen what appears to be a dented eye, and it was just the eyecap. The snake shed not soon after I noticed that.