This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Effect of atropine on eye is 
Select and explain. 
A. Active mydriasis, B. Passive mydriasis, C. Miosis, D. Pin point pupil
B: Passive mydriasis
Answer: B: Passive mydriasis 
Explanation: Parasympatholytics like atropine produce passive mydriasis due to blockade of m3 receptors. sympathomimetics produce active mydriasis due to contraction of dilator papillae Ref: Katzung 11th ed pg 117