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': 'Treatment of choice for congenital glaucoma with corneal ulcer – \nSelect and explain. \nA. Trabeculotomy, B. Goniotomy, C. Miotics, D. Steroids', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Trabeculotomy is particularly useful when corneal clouding prevents visualization of the angle (as in this question due to present of corneal ulcer).', 'role': 'assistant'}]