1, compound tropicamide eye drops (Medolite) phenylephrine and tropicamide compound: about 10 minutes after use pupil dilatation, the maximum effect takes 20-25 minutes, the duration is short, lasting 15-20 minutes, the drug effect lasts a total of 5-6 hours. Usage: 5 minutes x 4 times, 20 minutes after the optometry. 2. Safije: The ciliary muscle paralysis effect reaches its peak 30-60 minutes after the drug is administered, the ciliary muscle paralysis effect lasts only about 24 hours, and the pupil dilatation lasts about 72 hours. Usage: 10 minutes x 2 times, 30 minutes after the optometry. 3, Atropine: slow onset of action, 12-24h to peak, effective time 24h, lasting 10-18d. Usage: 3 times × 3 days or 5 days.