This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Ophthalmology
The ocular hypotensive agent causing apnoea in infants is:- 
Select and explain. 
A. Latanoprost, B. Timolol, C. Betaxolol, D. Brimonidine
D: Brimonidine
Answer: D: Brimonidine 
Explanation: Brimonidine is selective alpha 2 receptor agonist. It can cause drowsiness and respiratory depression in children and infants and therefore contraindicated in them.