Van Statten wrote:
Kyle believed he had become blind and the ring manifested that will.
Now I have to go back and reread that because that's not ringing any bells but I haven't read this since it was published. One of the last good non Morrison stories on JLA!
I read it right before I watched the movie. The explanation they gave kyle is that while he was sleeping, the ring was put on him and he was told that he was blind. When he awoke he believed he was blind and the ring made it so. Batman had planned to use his own will against him.