Which is the shoest acting mydriatic?
Tropicamide is the quickest (20-40min) and shoest acting (3-6hours) mydriatic. Atropine is a potent mydriatic but its slow and has long lasting action. With it, pupil dilates in 30-40min but cycloplegia takes 1-3hours.
Tropicamide
Atropine
Phenylephrine
Hyoscine