answer:It takes practice and a lot of judgment. My father was “essentially blind” in one eye for all of my lifetime, but he was one of the best drivers I’ve ever been with. And it’s not that he drove everywhere at 30 mph, either. He had just developed the habit of looking at everything – twice – and being aware of all around him. If you think driving with one eye is bad, you should try driving while looking through binoculars! Better have someone in the passenger seat who is willing and capable of taking the wheel from you. I wonder how many jellies we’ll lose this weekend as a result of that suggestion?)