This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
[{'content': 'Cataract is seen in all except \nSelect and explain. \nA. Rheumatoid ahritis, B. Glucocoicoid admistration, C. Galactosemia, D. Hypoparathyroidism', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rheumatoid ahritis causes thinning and melting of the peripheral cornea and sclerosing keratitis called scleromalcia perforans Refer: Khurana 6th edition page number 198', 'role': 'assistant'}]