Anecdote: In college I earned a few bucks working as a tutor. One of my jobs was to assist a blind student. I think they were an EE major. I wasn't tutoring, though; I was dictating an engineering textbook onto cassette tapes.

The school was in a converted office building. I was given a portable tape recorder (this was back in the paleo-Eighties, when analog ruled the Earth) and I would go up to the top of the stairs by the fire exit and sit in the landing to do my recordings. It was a reliably quiet place. (Also a good place for a mid-day nap.)

The book was, of course, filled with equations. At first I tried to read them aloud and that's OK for some things but some were just complicated. That's when I was given a special drawing board. It was a clipboard with rubber padding and clear plastic sheets. I used a stylus to write on the plastic, pushing down into the rubber padding to leave an indentation.

I hope technology has a improved a bit since then.