How the retina works

Wil Hadden ask at me.com
Sun Jul 4 16:17:24 EST 2004


"Michael Olea" <oleaj at sbcglobal.net> wrote in message
news:BD0B8241.A7FC%oleaj at sbcglobal.net...
> So you probably already got:
>
> Helga Kolb's overview "How the Retina Works"
> available at:
> http://webvision.med.utah.edu/index.html
>
>

Yep that's the same one, it's not half bad.

> A nice website on the evolution of the retina is:
>
> http://www.pigeon.psy.tufts.edu/avc/husband/avc4eye.htm
>

That seems food as well, thanks!

> As for the "upside down design", Stephen Palmer writes in the book "Vision
> Science: Photons to Phenomenology":
>
> ====
> The reason for this unusual arrangement is probably that the enzymes that
> are needed for pigment regeneration are in the pigment epithelium, which is
> opaque. Because the receptor disks must be adjacent to this vital
> biochemical resource, they must also be at the back of the retina.
> ====
>
> But then there is the head-foot molluscs retinal organization...(shrug).
>

Do I  want to know :) ?

Wil


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