This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2019, Subject name: Ophthalmology
All are drugs which lower IOP except 
Select and explain. 
A. Clonidine, B. Mannitol, C. Dexamethasone, D. Acetazolamide
C: Dexamethasone
Answer: C: Dexamethasone 
Explanation: Drugs which lower Intra Ocular presuure are : 1 CLONIDINE 2 MANNITOL Anti glaucoma drugs 3 ACETAZOLAMIDE But , DEXAMETHASONE is a topical steroid and raises the intra ocular pressure.