9/30    What causes the particle like thing that floats in your vision
        when you look at the sky? My eye doctor casually mentioned
        that if I notice an abnormal amount of particles floating,
        then I should have it checked out. Come to think of it, it's
        always there from the beginning of time. What exactly is it?
        It moves even if my eyes are not moving... I am curious if
        there are some technical explanation behind it...
        \_ ghosts, demons. etc
        \_ Crap floating in the vitreus humor (inside your eyeball).
           \_ So do most people have it? does it occur more with
              near sightness?
              \_ dad, the optometrist, calls them floaters.  everyone
                 has them, and they tend to accumlate with age.  like
                 dust that gets into a camera.
                 \_ so how come their number goes way up when you're about
                    to pass out from getting choked?  or is "seeing stars"
                    differnt?
              \_ Everyone has it.  It increases as you age.
                 \_ more on floaters:
                    http://en.wikipedia.org/wiki/Floater
        \_ I've always wondered about that since grade school.  So wow.
           I learned something today.