Which is the shortest acting mydriatic?: (A) Atropine, (B) Tropicamide, (C) Cyclopentolate, (D) Homatropine
Answer is B. Ans. (B) Tropicamide(Ref: Katzung 11/e p124)Atropine is longest acting (5-6 days) whereas tropicamide is the shortest acting (15-60 min) mydriatic.