Visual Agnosia

Visual agnosia is the inability to recognize objects despite intact vision, resulting from lesions in the occipitotemporal cortex. Clinical features include preserved perception but impaired recognition of faces (prosopagnosia) or objects. Etiology includes stroke, trauma, or neurodegenerative disease. Pathophysiology involves cortical processing deficits in the ventral visual stream. Diagnosis relies on neuropsychological testing and imaging. Management is supportive with compensatory strategies; prognosis depends on lesion location and extent.