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': 'Earliest symptom of Congenital Glaucoma \nSelect and explain. \nA. Lacrimation, B. Blepharospasm, C. photophobia, D. Diminision of vision', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Earliest but nonspecific symptom of Congenital Glaucoma is\xa0photophobia', 'role': 'assistant'}]