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
Sho acting mydriatic used in fundoscopy is: 
Select and explain. 
A. Atropine, B. Homatropine, C. CycIopentolate, D. Tropicamide
D: Tropicamide
Answer: D: Tropicamide 
Explanation: Ref:KD Tripathi pharmacology 6th edition (page.no: 111) Tropicamide has the quickest (20-40 min) and briefest (3--6 hours) action but is a relatively unreliable cycloplegic. However, it is satisfactory for refraction testing in adults and as sho acting mydriatic for fundoscopy. in children, atropine ointment is used for fundoscopy as the ciliary tone is high among them.