Yehren wrote:Naturally, the prescence of material in front of the receptors degrades their sensitivity and acuity. If you doubt this, try putting a little dust on the surface of a digital camera's sensor.
There are useful reasons for the material to be that way, but the result is suboptimal, and requires a "blind spot", an area in which our vision fails, which cephalopods do not have, since they have evolved a more elegant and effective solution.
The backwards configuration of the vertebrate retina is optimized as much as it can be without turning the whole structure inside out. Such changes are very difficult to do by gradual steps, and so it hasn't happened.
Like I said evolutionists argue from ignorance. Before anyone accepts this ludicrous comparison to the eyes of a cephalopod I suggest they research experts in human vision.