Yes, I can focus and unfocus my eyes at will, I too, to razor sharp vision or so blurry that I can’t even make out features on anyone’s face. (Without going cross eyed, which I can also do with any eye at a time).
It’s a good superpower, as I have glasses that I can wear if I want to which are roughly +3.5, but I rarely bother, because I’ll just use my eye muscles to see perfectly well,so I never freak out when I lose my glasses or whatever. I
It’s really handy for zoning tf out, too. Which is mostly a blessing, but sometimes a curse, especially as I have the inattentive ADHD where I just go blank faced and stare into the blurry distance whilst totally disappearing inwards.
You reminded me that when I was a kid I had a similar weird scale thing happen often, but it was incredibly difficult to describe. It was very unsettling and I never really told anyone. I felt like words in my head were unusually big or everything in my head was really intense and urgent, especially my inner voice. It’s something that’s seemingly impossible to explain. It was like everything was expanding or growing or like I was thinking louder. Then sometimes it would be the same but in reverse where everything confusingly was small, quiet, and felt almost delicate. Yeah. I dunno.