Can anyone use a darkroom?
With some qualifications, yes, anyone can process inside of a darkroom. I can’t think of any situation that would prevent someone from working in a darkroom. I’ve heard of people with allergies to the chemicals, who wear rubber gloves (or, if they’re allergic to rubber, some other gloves). I know that pregnant women should avoid certain chemicals within the darkroom, but hopefully you’re not pregnant all the time. The only thing I can think of would be it would be very difficult, though not completely impossible to focus an enlarger if one were blind. But then, one who is blind would get little in the way of satisfaction from having a picture developed anyway, I would think.