About a month ago, I had a very similar experience. I was in my living room, looking down and reading something on my phone, and through my perriferals I noticed the entire room around me was completely opposite. The entire room was completely backwards, even my position seemed to go from facing south to facing north, and this caused such immediate confusion, I looked up from my phone to see that everything was normal. Ive never had any issues with dyslexia, and thought maybe I had just experienced a brain fart, or glitch in the universe? Very weird experience, and haven't found anything related to it online with the exception of your post! I don't have any answers, but at least I know im not the only one who's had something like this happen to them!