Describe the structures and their function involved in vision. Be sure to start with the anatomy of the eyeball and retina. Be sure to describe the cell layers present in the retina. Then, describe the nervous pathways involved in the sensation and perception of vision. What is the cranial nerve involved in vision? Then be sure to include the location and description of the lateral geniculate nucleus, primary visual cortex, and visual association cortex. Within what structure is the lateral geniculate nucleus located? Where is the superior colliculus located and what is its function in vision? How does visual perception affect visual sensation? That is, do we only see what we want to see? This is referred to as "top-down processing" of visual perception.

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