@dlowan,
Yes, definitely true. I've always been night blind with poor peripheral vision, and didn't know it for a long time, just figuring others were like me, while I was the one who tripped on tree roots or goofed up sitting down in dark restaurants. I was long used to being me. Those turned into stories, and turned to be not really stressful, just goofy tales. I finally took myself to the Jules Stein Institute, telling the resident that I thought I had RP, an idea I got from a description in a magazine, a kind of health ad if I remember. He said no, that's rare. Not long later, he agreed and then I had a room full of people in white coats looking at my eyeballs. That was when I was in my forties.
New York, bless it's beady heart, was easy to walk (daytime, but also somewhat at night because of the reasonable lighting - in 2003, quite a joy.
Things are downhill these days, not so much re vision (I still have one grand eye), as re balance - but I still enjoy a local daytime walk, except for the crappy paving. I'm starting to carry a stick. It's ironic, given that I used to design paving, back in the day. Don't get me started on the killer neighborhood mailbox, the cause for the stick... the place around is multiply unlevel. I used to specify mail box systems too. The devil is getting back at me. New Mexico is a bit different from California re, uh, construction oversight.
Well, enough of this, eh? There is plenty of good.