]> 2026-07-31T09:41:16+00:00 WBR0586 0 en Parietal lobe Parietal lobe lesions are usually associated with inferior homonymous quadrananopia due to the interruption of the dorsal optic radiations (Baum's loop). Parietal lobe lesions do not usually cause superior quadrantanopia except if large enough to cause a mass effect. Frontal lobe Frontal lobe lesions usually cause visual field defects by compression the optic tracts or the optic nerve causing unilateral anopia. Frontal lesions can also affect the frontal eye fields involved in eye movements, such as voluntary saccades and pursuit. Frontal lobe lesions do not usually cause quadrantanopia. Temporal lobe Temporal lobe lesions usually present with visual field disturbances similar to our patient. Superior quadrantanopia is seen in temporal lesions due to the interruption of the Meyer's loop Occipital lobe Occipital lobe lesions usually cause homonymous hemianopia, although cases of quadrantanopia are also encountered. However, superior quadrantanopia is classically seen in temporal lobe lesions. Cerebellum The cerebellar lesions are usually not associated with visual field defects. Pathophysiology C Head and Neck Neurology 2020-10-28T01:03:35Z 2459150.5441551 WBR0586