The ability to track moving objects smoothly (smooth pursuit) can be trained to improve vision.

“You can actually take a few minutes each day, or maybe if you don't do it each day, you could every third day or so, and actually just visually track a ball. Sometimes it's moving in and kind of an infinity symbol. Sometimes it's more of a sawtooth. Sometimes it's changing speed. Sometimes the cue that you're following, the little target, is dilating and contracting.”

“while I prefer that people get out into the real world and experience smooth pursuit tracking of visual objects, I don't know, maybe it's a good reason to go to a hockey game or, you know, and try and keep your eye on the puck, which I can never seem to do. It moves so fast. Or I guess this is a good reason to watch live sports if that's your thing, or to watch a tennis match, like a cat, like a kitten, watching the ball go back and forth, whatever, watching kids play, it doesn't really matter.”

“Now, our visual system is exquisitly tuned to motion. Not just our self-generated motion, but the motion of things around us. And one of the things that it does is something called smooth pursuit. Smooth pursuit is our ability to track individual objects moving, as the name suggests, smoothly through space in various trajectories. You can actually train or improve your vision by looking at smooth pursuit stimulating.”