Diseased Bird: Tufted titmouse with injured eye

This tufted titmouse began visiting one of my feeders a few days ago. He seems to have one injured or infected eye, but no other noticeable injuries that suggest sickness. The bird appears to not have very good depth perception, staying in the air longer and circling the area he will land on before perching. I have seen him bump into branches and feeders. He still seems very energetic like the other tufted titmice that visit! My mom has been calling him One-eyed Willy.