A series of screengrabs I made of a David Attenborough documentary shown on Animal Planet a while ago:
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A series of screengrabs I made of a David Attenborough documentary shown on Animal Planet a while ago:
The critics could not believe that such a complex mechanism could evolve through a natural process. Darwin thought it could; “If the transitions from simple to complex eyes could prove that every step is useful then the difficulty in believing in natural selection is not contrary to my theory.”
"If the existence of transitions from simple to complex eyes could be proven, and those transitions are useful, then the difficulty in believing in natural selection is not contrary to my theory."
http://images.google.com/images?q=gecko+eyes
The 5th looks like the animal have some contact lens :) with what seems to be the retina misaligned with the pupil.