I believe he is just a normal, every day ball. The way he is feeding now has only been going on for about 3 months. It is almost as if he can't really see anymore (heat or actual sight).
I have even got to the point that I can't handle him due to his instability. When I change his water, or clean out the cage, I barricade him to one area.

The heat has gone up a little bit, but there hasn't been really any major changes.