I was just sitting around, doing some writing I'd rather not be doing, and it came over me to go get a cup of coffee.
Whoa, too fast there. I had one of those before-lunch moments of stars in the eyes. Or more like little squiggles that dart like fireflies and disappear.
I love that phenomenon. What you're seeing is actually the red cells moving through the capillaires of the retina. Really. Pay attention, and you can tell they repeat the same tracks. And that their appearance is in sync with your pulse. That's what that is: watching your own blood go around.