My thoughts: of course, he can have a CCW. A piece of paper isn't dangerous (the occasional paper cut aside). Now, whether he can purchase a firearm? Totally different matter.

If he already has a firearm that he could carry? That's too sticky for me to want to touch.

Working and caring for others? Why not? I've heard of legally blind physicians. He could probably teach just fine. I doubt he'd be a truck driver, but there's no reason he can't be a functioning society member.