This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Symptomatic Disturbances of Vision, Subject name: Ophthalmology
[{'content': 'A patient has complaint of seeing coloured holoes in the evening and blurring of vision for last few days with normal IOP: \nSelect and explain. \nA. Prodromal phase of acute angle closure glaucoma, B. Acute angle closure glaucoma, C. Chronic glaucoma, D. Epidemic dropsy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. Prodromal phase of acute angle closure glaucoma", 'role': 'assistant'}]