Before revision:  Importantly, blurring images according to the human blur function yielded the best performance compared to images with shallower or steeper blurring. Taken together our results suggest that, peripheral blurring in our eyes may have evolved for optimal object recognition , rather than merely to satisfy wiring constraints.
After revision:  Importantly, blurring images according to the human blur function yielded the best performance compared to shallower and steeper blur profiles. Even in humans, categorization accuracy deteriorated only for steeper blur profiles. Thus, our blurry peripheral vision may have evolved for optimal object recognition , rather than merely to satisfy wiring constraints.