http://en.wikipedia.org/wiki/Human_eye
The visual system in the brain is too slow to process information if images are slipping across the retina at more than a few degrees per second.Thus, for humans to be able to see while moving, the brain must compensate for the motion of the head by turning the eyes. Another complication for vision in frontal-eyed animals is the development of a small area of the retina with a very high visual acuity.
The visual system in the brain is too slow to process information if images are slipping across the retina at more than a few degrees per second.Thus, for humans to be able to see while moving, the brain must compensate for the motion of the head by turning the eyes. Another complication for vision in frontal-eyed animals is the development of a small area of the retina with a very high visual acuity.
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