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': 'The commonest complications of topical steroids is - \nSelect and explain. \nA. Glaucoma, B. Cataract, C. Ptosis, D. Iritis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]