[FoRK] self-eye-poking

[Stephen D. Williams]

>
> http://web.mit.edu/newsoffice/1993/eye-0127.html
>
> Close your eyes and gently rub the outside corner of one eye. Press a
> little harder. What do you see?
>
> If you're like many of the approximately 50 participants at a talk last
> week by Jeremy Wolfe, visiting associate professor in brain and cognitive
> sciences, you saw a small white spot, or a black spot with a white rim.
> But where does the spot come from? What causes it?

Perhaps excitation caused by the optic nerve bed being deformed and about to
blow out?  I don't see it, although I've seen other effects from rubbing my
eyes, including a light/dark sequence followed by fireworks like delayed
random firing.

sdw
>
> [...]