For visual pathway includes retina, optic nerve, optic chiasm, optic radiation and occipital visual cortex (higher visual pathways – lesion sites and corresponding visual field defects.). Damage along the visual pathway lead to various visual field defects. The type of visual field defect may help to localize the lesion (see table: visual field defects). Higher visual pathways – lesion sites and corresponding visual field defects. In retrochiasmalen lesions visual field defects symmetrical (congruent) will be, as in the occipital lesion in no. 4 is shown.