The effect of dilating the pupil generally begins to appear 30-40 minutes after the use of atropine. For adults, recovery can occur several hours after the use of atropine and long-term observation is generally not necessary. For children, the pupil needs to be slowly dilated, and at this point the effect of dilating the pupil differs between 3, 5, and 7 days, and there are some differences in the situations that apply. I. Adults: The pupil is dilated quickly by applying atropine drops to the eye, and recovery time is faster, usually returning to normal pupil size 3 hours after completion of the dilatation program. Adults generally do not use atropine for long-term observation for 3-7 days. II. Children: Children undergoing a dilated pupil program require a slow dilatation of the pupil, mostly through 3-7 days of topical atropine, depending on the situation. 1. 3 days of dilatation: Children without combined strabismus, or without internal strabismus but with external strabismus, after 3 days of medication, the 4th day is usually no longer used and a visit is made to check whether the dilated pupil has achieved its effect. 2. 5 days of dilatation: Children with internal strabismus require 5 days of continuous use of 3. 7 days of dilated pupils: children with hyperopia combined with internal strabismus should use atropine for 7 days in a row and visit the doctor on the 8th day for examination. The effect of dilated pupils usually becomes more pronounced as the duration of atropine use increases, and dilated pupils generally return to normal in about 3 weeks. When using atropine, be sure to do so under the guidance of a professional, not on your own, and carefully clean your hands before using the medication to avoid bacterial infection. Finger pressure should be applied to the tear sac area to avoid absorption of atropine through the tear duct. After pupil dilatation, the pupil is in a dilated state, making it easy to become photophobic and blurred in the near future. You should pay attention to reducing outdoor activities and choose to wear sunglasses or a sun hat when going out to reduce the discomfort caused by eye irritation. In addition, dilated pupils are used to relax the ciliary muscles. It is not recommended to read books or use electronic devices at close range after using atropine to dilate pupils. If you experience facial redness and thirst after pupil dilatation, this is generally normal and can be gradually restored. If you experience discomfort such as increased discharge, conjunctival congestion, or fever, it is recommended that you drink more water and observe closely. If your body temperature exceeds 38.5°C or if you experience nausea, hallucinations, or excitement, it is recommended that you seek medical treatment as soon as possible. For patients who suffer from glaucoma or heart disease themselves, they should promptly explain to their doctors that this drug should be used with caution or prohibited under medical supervision.