alt Hacker NewsI did IT for a community Center way back in the day and the director was blind. I was blown away by how fast his screen reader read things out to him - completely incomprehensible to me - and his efficiency with keyboard shortcuts would put even vim/emacs elitists to shame.
The way (Windows) screen readers handle web navigation is basically Vim in disguise.
You have two modes: "focus mode", where you can edit text in text fields and keys are passed straight to the browser, and "browse mode", where keys move a virtual cursor around the page.
In browse mode, navigating with just arrow keys all the time would be just as slow as you might imagine, so you use single-key keyboard shortcuts to move by role, E.G. to the next heading, button, table or unvisited link.
The keyboard layout is optimized for memorizability and not efficiency, you use the actual arrow keys instead of hjkl for example, but the concepts are eerily similar.
There are a couple of other approaches to solve this problem, Mac OS's Voice Over is much more Emacs-like for example, and each approach has its own pros and cons, but that's definitely one way to do it.