Hi, if I concentrate on a blank area like the sky or a wall, with a little light, I can see what appears to be thousands of little things flitting around in the field of vision. I don't get any flashes, but to me its clear its a bunch of little things moving around, probably in my eyeball, I don't know.
I also see floaters, and I swear they are just like cells I have seen under microscopes in Science class. I am myopic, and I've noticed some of this all my life. It has not changed at all, ever.