I was freaking psyched when I got a glow in the dark football that actually worked! Does not improve depth perception in the dark. There were a few black eyes before we tossed it in the garage.
No problems? I had glue hands. Not dick hands. We called them dick hands because football season was fucking cold and every second on the sidelines your hands were in your pants. If you couldn't catch something.... well... dickhands. I haven't drooped anything but weight in most of my life. I don't think the physics of depth perception has changed much.