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': "Fincham's test differentiates cataract from \nSelect and explain. \nA. Conjunctivitis, B. Iridocyclitis, C. Open angle Glaucoma, D. Ac. Congestive Glaucoma", 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Acute congestive glaucoma', 'role': 'assistant'}]