system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Wernicke&;s hemianopic pupillary reaction indicates lesions at the level of
assistant
The correct answer is  Lesions of optic tract: These are characterised by incongruous homonymous hemianopia associated with contralateral hemianopic pupillary reaction (Wernicke's reaction). These lesions usually lead to paial descending optic atrophy and may be associated with contralateral third nerve paralysis and ipsilateral hemiplegia. Common causes of optic tract lesions: Include syphilitic meningitis or gumma, tuberculosis and tumours of optic thalamus and aneurysms of superior cerebellar or posterior cerebral aeries. Ref:- A K KHURANA; pg num:-290