Mydriatics/Cycloplegics Onset & Duration

(T., 01/2013, p. 430)

T., G. A., P., R. M. (2013). The Wills Eye Manual: Office and Emergency Room Diagnosis and Treatment of Eye Disease, 6th Edition. Retrieved from vbk://9781496301437

AgentConcentrationMaximal Effect Duration of Action
Phenylephrine2.5%, 10%~20 min~3 hours
Tropicamide0.5%, 1%~20–30 min~3–6 hours
Cyclopentolate0.5%, 1%, 2%~20–45 min~24 hours
Homatropine2%, 5%~20–90 min~2–3 days
Scopolamine0.25%~20–45 min~4–7 days
Atropine0.5%, 1%, 2%~30–40 min~1–2 weeks

Note that phenylephrine possesses only mydriatic properties.