When I was a work/study at the Veteran’s Administration we had a blind gal come in every day and somehow do filing.
The article spells it out, sans using the old ( and appropriate ) names for people who can do little to nothing in a demanding job. And no, I'm not putting them down, nor trying to insult those who can't help the way they were born; just stating the facts.
And don't even think about the very high level mentally whatever the PC term for them now is, who work as baggers, in grocery stores! The vast majority of them are useless to worse than that.
We have a blind guy here at work who does tech support over the phone.