So what you're saying is no LSD?!?
Crap.
Back to chocolate then.
--- In OliveStarlightOrchestra_at_yahoogroups.com, "herownsourgelatine"
<dlinden_at_...> wrote:
>
> --- In OliveStarlightOrchestra_at_yahoogroups.com, Bark of Delight
<barkofdelight_at_>
> wrote:
> >
> >
> > --- Joy McCann <joy.mccann_at_> wrote:
> >
> > > So do they really help? Or am I simply being
> > > visually obsessive-compulsive
> > > by putting the glasses on?
> > > ....
> > > Perhaps I'm nuts. Or maybe I need some LSD.
> >
> >
> > Yes to all the above.
> >
> > DJQ to elaborate presently.
> >
> > Bark!
> >
> Here's the deal. If you are looking at a uniform field of a single
color, it won't matter if
> you have your glasses on or off-- your perception of that color will
be the same. However,
> if you are looking at a natural scene in which color varies a lot
across the visual field, then
> having corrected versus blurry vision will have a big impact.
Essentially, when your vision
> is defocused, then a single cone or small group of cones (the color
sensing cell type in
> your retina) will be receiving light from multiple adjacent points
in your visual field. If
> these points have different colors, then those colors will be
blended as the image blurs.
> You can see this effect another way by taking a slide or video
projector and twiddling the
> focus knob...
>
> hosg
>
Received on 2007-06-03 16:16:44