Visual Pathway

The visual pathway. Characteristic field defects seen with lesions at various sites along the pathway are illustrated. The calcarine cortex in the occipital lobe is the location of the primary visual cortex. The occipital lobes are supplied by the posterior cerebral arteries, terminal branches of the basilar artery.

The pupillary reflex is affected only if fibres proximal to the lateral geniculate body are damaged, or there is a lesion in the midbrain or of the III nerve. Source: Weiner HL, Levitt LP (1978). Neurology for the house officer 2e. William and Wilkins. Reproduced with permission of Wolters Kluwer Health.