Re: CHAT: Ultraviolet (was: Orange)

Christophe Grandsire writes:
 > En réponse à Andy Canivet <cathode_ray00@...>:
 >
 > >
 > > However - the stereoscopic cells in the visual cortex are dependent on
 > > eye
 > > development - we detect distance / perspective using several visual
 > > clues,
 > > as well as special cells specifically adapted for the task.  People
 > > with
 > > congenital myopia, astigmatism, etc., or whose eyes develop a little
 > > more
 > > slowly than normal, will have undeveloped stereoscopic cells.  It isn't
 > > much
 > > of an impairment, except that without stereoscopic cells a person
 > > probably
 > > wouldn't be a very good fighter pilot or baseball player - and among
 > > other
 > > things, will never be able to see the secret picture in one of those
 > > "Magic
 > > Eye" illustrations, no matter how hard they try.
 > >
 >
 > Well, I do have a sight good enough to become a fighter pilot (though I
 > abandoned that path after 1 week in military school), but I do have
 > difficulties seeing those "secret pictures". In fact, when I see them, they
 > appear inversed to me (what should be in front appears back, and vice-versa). I
 > don't know where it comes from...
 >

Are you crossing your eyes, that is focusing on a point between you
and the image, rather than on a point beyond the image?  That would
result in a reversed 3D effect, or so I've read.  Let's think...  gah,
thinking's too hard.  Tell me if that's what you're doing first, then
I'll work out how it does it.

Reply