Which of the following antiglaucoma drug can cause stenosis of nasolacrimal duct: (A) Timolol, (B) Apraclonidine, (C) Latanoprost, (D) Adrenaline
Answer is A. Timolol caused stenosis of nasolacrimal duct & obstructs the drainage leading to maximum systemic absorption of drug.
Apracloinidine: Lid retraction.
Adrenaline: Conjuctival pigmentation.
Latanoprost: Iris pigmentation, growth of eyelashes.