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': "A 14 year old boy complains of pain during reading. On examination, his both eyes are normal and vision with Snellen's reading is 6/5. He still complains of pain on occluding one eye. The diagnosis is : \nSelect and explain. \nA. Myopia, B. Pseudomyopia, C. Hyperopia, D. Emmetropia", 'role': 'user'}, {'content': "Answer: B \nExplanation: B i.e. Pseudomyopia This boy is having symptom of ocular strain (pain during reading) but vision with snellen's reading (without cycloplegia) is normal (6/5 or 6/6) because he is compensating for his refractory error by hyperaccomodation. So the diagnosis is Pseudomyopia/ Accommodative spasm.", 'role': 'assistant'}]