The Crystal Eyes are mystical objects that imprisoned the Phantom Beast Generals. There are eight Crystal Eyes altogether in which five were found by Dr. Silva Jennings. Three which Jellica revives while the other five were given by Dr. Jennings to Casey to keep safe until the danger had passed.It is safe to say that after the star allignment the five eyes were returned to Dr Jennings to continue her research, and the other three eyes that were used as transmitters for the Spirit Rangers after the Final Beast Wars were also given to Dr Jennings as well, this was all later confirmed.
Known Crystal Eyes
Each of the Crystal Eyes represents an animal.