Comment by throwitawayday

On eyes in general: the retina is not like a camera pixel array, rather, it extracts all kinds of features and detects motion:

"Eye smarter than scientists believed: neural computations in circuits of the retina." Gollisch, Tim, and Markus Meister. Neuron 65.2 (2010): 150-164.

http://www.sciencedirect.com/science/article/pii/S0896627309...