Back in the late 1980s I read a book called Mindsight. It was a program for training people to see wiithout using their eyes. A lady I knew was working with the author who, though elderly, was still doing some training. He taught blindfolded people to read newspapers, and as I recall he taught at least one blind person to drive a car perfectly. There are all sorts of information coming in to our unconscious mind that we don't pay attention to. For one thing, we don't really need it because we have sight.
I never got very good at it, probably because I wasn't that interested. One friend of mine though became very good through practice. Late one night we were working on a large house far out in the woods that had a generator for lights and power. The generator ran out of gas and the lights died. It was overcast and totally dark. While I fumbled and tried to find where I had put the flashlight, Tony walked through the whole house, out the door, down the hill to the shed where the generator was, filled it with gas, and restarted it. I still hadn't found the flashlight when the lights came back on. He thought it was no big deal. I've seen some other amazing demonstrations of it.
Anyway, I looked online and think the book was this one:
Training Manual for Sight Without Eyes - Through Mind Sight and Perception - Lloyd Hopkins
"Before there was any public disclosure of the U.S. Government's Remote Viewing Research, Lloyd F. Hopkins developed one of the most successful training programs ever for expanding Human Awareness beyond the five senses. His motivation was the exploration of expanded human consciousness, and his desire to help blind people see without eyes. This is the only book that Mr. Hopkins published on his work."
Here's the link where I found it:
http://www.clspress.com/mindsight.html