This document lists and defines 12 types of visual field defects in the human visual pathways, including right or left anopsia, junctional scotoma, bitemporal hemianopia, binasal hemianopia, right or left homonymous hemianopia, right or left homonymous quadrantanopia, right or left homonymous hemianopia with contralateral or congruous defects, right or left homonymous hemianopia with macular sparing caused by occipital cortex lesions or PCA lesions, right or left homonymous hemi-scotomata caused by occipital pole lesions such as MCA lesions, and right or left altitudinal hemianopia caused by AION or optic disc ischemia