Apparently the image from the eyes undergoes lots of preprocessing before it hits the brain. Some of it inside the eye itself. Which I found quite surprising. In the retina, perhaps?
And following discussion with Resonating. Who bailed shortly afterwards, however.
@FaheemMitha so you could write your question something like "Where does the preprocessing of the images from the eyes occur? Does it happen in the retina?"
@FaheemMitha just ask it! You should take the chance.. And if it is closed, nothing will happen to you! And I promise you an up Vote! I bet resonating would up vote too...