Which of the following is the shoest acting mydriatic?: (A) Atropine, (B) Tropicamide, (C) Cyclopentolate, (D) Homatropine
Answer is B. 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. for infants and children, atropine must be used for fundoscopy