Re: Bad perscription / glasses or should I get used to a world that slopes???

In article <[EMAIL PROTECTED]>, "Ian"
<[EMAIL PROTECTED]> wrote:

> Thanks - but won't this give me a problem when I take the glasses off (with
> things sloping/distorting the opposite way),
> if  my eyes become accustomed to the slope/distortion created by the
> glasses?
> 
> I'm not really sure I could cope with the world being out of shape when I
> take the glasses off....

The eyes provide the raw data for vision, but we really "see" with our
brains.  Of course the world is the same shape, whatever your brain
thinks.  It's just that, with the glasses on, your brain is getting
different input than it did before.  If you wear your glasses full-time,
then your brain will get used to the new input.  Some people can store two
states in their brain, so that the brain will adjust what it thinks it is
seeing based on whether the glasses are on or off.  Some people can't, and
it depends on what the correction is also.

-- 
Dan Abel
Sonoma State University
AIS
[EMAIL PROTECTED]