This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'Significant loss of vision in a patient with hypertension can occur due to all of the following, except - \nSelect and explain. \nA. Occipital infarct, B. Anterior ischemic optic neuropathy, C. Papilloedema, D. Retinal hemorrhage', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Papilloedema causes gradual loss of vision.', 'role': 'assistant'}]