J.U.
I did a short google search and from what I saw it could be either the camera or Retinoblastoma. Does he have any symptoms other than the photos? Taking him to the doctor to be evaluated is a great idea. From what I read it seems like if it is Retinoblastoma, it is very treatable. Let us know how it goes. Sorry I don't have more information/ advice to give. Good luck!
Take care