I know a blind programmer who uses an 80 column braille display. He also uses a lot of Linux command line tools with it that he has made himself afaik, for example for email. He can program incredibly fast with it, he uses an editor in text mode (he has no graphical desktop), but I'm not sure if it's emacs or vim or something else. The command line seems well suited for this braille display for him, but I think all of this requires a huge learning time starting from childhood.