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': 'Ocular complications in herpes zoster ophthalmicus usually appear: \nSelect and explain. \nA. At the subsidence of skin eruptions, B. Simultaneous with cutaneous lesions, C. Two days after the skin eruptions, D. During stage of erythematous skin lesions', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. At the subsidence of skin eruptions', 'role': 'assistant'}]