I used to work as a learning support tutor for the RNIB. My job was to support blind and partially sighted students taking courses at the local college, and it was very rewarding. Much of the work involved working as amanuensis, but I had to do stuff like getting notes adapted (either into Braille or large print), taking assignment dictation, escorting students around the college or just acting as liaison between student and lecturer.
As I've said, it was immensely rewarding, and I'm still in touch with one of my students ten years on. He took a couple of full-time IT courses and now has a sideline putting PC systems together for disabled users.
One of the specialist workers I used to meet was a mobility trainer. It was basically his job to teach people how to get around independently.
Funnygirl speaks wisdom - contact RNIB.