This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
[{'content': 'Not a feature of traumatic optic neuropathy: \nSelect and explain. \nA. RAPD, B. Dilatation of pupil, C. Centrocecal scotoma, D. Macular edema', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Macular edema is not a characteristic feature of traumatic optic neurpathy. Traumatic Optic Neuropathy Loss of vision. Dilatation of pupil. Impaired Pupillary light reflex. Contrast sensitivity is decreased. Central or centrocecal scotoma (though less common, it can be seen in traumatic optic neuropathy) MRI is the investigation of choice for visualization of optic nerve. Treatment -Steroids/ Surgical decompression.', 'role': 'assistant'}]