This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuro-ophthalmology, Subject name: Ophthalmology
[{'content': 'All of the following are true for the Adie&;s tonic pupil except \nSelect and explain. \nA. Light reflex is present, B. It is usually unilateral, C. The affected pupil is larger, D. Near reflex is very slow and tonic', 'role': 'user'}, {'content': "Answer: A \nExplanation: Adie's tonic pupil In this condition reaction to light is absent and to near reflex is very slow and tonic. The affected pupil is larger (anisocoria). Its exact cause is not known. It is usually unilateral, associated with absent knee jerk and occurs more often in young women. Ref:- A K KHURANA; pg num:-293", 'role': 'assistant'}]