I'm not sure about hand-eye coordination but I have read about studies that state steroids may help academically. Supposedly it helps with concentration and memorization... If it did in fact help concentration I could see it helping the pitchers...

Bottom line, -I- feel like he had an unfair advantage and shouldn't be held in the same regards as the all time greats. -I- also feel like he didn't need the juice and would have been one of the greatest ever without it, just poor decision making. Oh, and to top it all off the guy is an @$$.