After much work by a number of our contributors, not the least of whom is the author of this particular effort, we have a spectacular new addition to Webvision: A section on the Evolution of Phototransduction, Vertebrate Photoreceptors and Retina by Trevor D. Lamb. Be sure to check it out and let us know what you think in the comments.
Note: There are four more chapters to come in this section including:
Evolution of Vertebrate Opsins
Evolution of Vertebrate Photoreceptors
Clues to Evolution from Embryonic Development of the Retina
Synthesis of Findings on Evolution of the Vertebrate Eye
Look for them in the next couple of weeks.
Image Credit: Hans Hillewaert via Wikipedia.