I used to play with this as a kid. I have eye floaters[0] that tend to drift down to the bottom of my eyes, so I would saccade my eyes up to bring them to the c

I used to play with this as a kid. I have eye floaters[0] that tend to drift down to the bottom of my eyes, so I would saccade my eyes up to bring them to the center of my vision, then focus on the floaters and smoothly watch them on the way down (which actually just kept them centered since I was matching the tracking rate to their falling speed). I was kind of a weird kid. [0]: https://en.wikipedia.org/wiki/Floater https://en.wikipedia.org/wiki/Floater