This tracks for me. As a kid I spent lots of time randomly staring up close at the smallest of details I could, deliberately shifting my focus and gaze on magic eye books, and frequently staring far off into the distance to see how far away I could still make out things like individual leaves on trees. I'd even do it indoors, curious to see how dirty/clear/distorting the window glass was, or see how far across the room I could make out details like felt tufting or smaller brickwork or mortar texturing.

If I'm honest I still do most of this from time to time, just less magic eye books and a lot less impulsively thanks to years of learning to keep my ADHD under control, oh and drugs help too.

This sort of fits into what I said here https://news.ycombinator.com/item?id=30412140 talking about ADHD. The adaptive process of someone who is more neurotypical will not include a heavy dose of random distracted looking around the room. ADHD may skew the scale on the feedback process by adding in a lot more further focusing events. Even randomly focusing across a classroom is probably beneficial.