What a cat!!! I once had a three legged cat who was an excellent mouser. He hated it when I would take them away from him. They always caused him some digestive problems.
You can see his blindness in that pic... his lens is completely clouded over on one eye, and the creepy part is it moves around his eye. It doesn't seem to cause him discomfort though... so I've opted not to remove it. They'd take the whole eye out if it needed surgery, and that was a lot of $$$. I figured I'd wait and see if/when it caused him a problem.