This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Grossly incongruous, incomplete (contralateral) Homonymous Hemianopia causing lesion is \nSelect and explain. \nA. Optic nerve, B. Lateral optic chiasma, C. Central optic chiasma, D. Optic tract', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Lateral optic chiasma # Visual fields that accompany damage to the visual pathways.1. Optic nerve: unilateral amaurosis.2. Lateral optic chiasm: grossly incongruous, incomplete (contralateral) homonymous hemianopia.3. Central optic chiasm: bitemporal hemianopia.4. Optic tract: incongruous, incomplete homonymous hemianopia.5. Temporal (Meyer\'s) loop of the optic radiation: congruous partial or complete (contralateral) homonymous superior quadrantanopia.6 Parietal (superior) projection of the optic radiation: congruous partial or complete homonymous inferior quadrantanopia.7. Complete parieto-occipital interruption of the optic radiation: complete congruous homonymous hemianopia with psycho- physical shift of the foveal point, often sparing central vision and resulting in "macular sparing."8. Incomplete damage to the visual cortex: congruous homonymous scotomas, usually encroaching at least acutely on central vision.', 'role': 'assistant'}]