Re: [KV] Colors (was Re: Movies)

G'day,

 >As I understand it, the blind spot is present because the
 >visual nerves run "inside" the rods and cones. In octopus, on the
 >other hand, the nerves run "outside" the rods and cones, removing
 >the need for a blind spot.

Yep this comes from the different ways the eye evolved, ours are an 
extension of the brain while octopus' started as a pocket in the skin. 
That's what's so potentially cool about alien physiology, they might not

have a blind spot, but they may well have more than one, it all depends
on 
how their eye evolved and from what.

Cheers

Beth

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Elizabeth Fulton
CSIRO Division of Marine Research
GPO Box 1538
HOBART
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Fax 03 6232 5053 International +61 3 6232 5053