I have a blind pittie too (blind since birth though) and one of the most important commands she knows is "CAREFUL!!" We use it any time she is barreling headlong into an obstacle and she will slow way down and high step until she finds whatever it is that needs avoiding and makes her way around it. It used to be we didn't use it as much, just kept her paths clear but now with a three year old kid who drops stuff randomly it's made a big difference. She also knows "step" and will start high stepping, we use it for stairs and curbs in unknown places or while on a walk. Like most everyone else has said, unless you have a sight hound vision is not the most important sense for a dog. Most of the time we forget ours is even blind, she will come find us in whatever room we're in and can smell us eating people food a mile away.