Rapid pupil dilation is usually able to recover in 6~8 hours, the specific time varies from person to person and cannot be generalized. Rapid pupil dilation for optometry needs or fundus examination needs of patients, such as tropicamide eye drops, etc., generally dilated pupils after 6 to 8 hours, the pupil can be gradually narrowed to return to the normal state. However, each person’s physique is different, and the metabolism time of drugs is also different, so the recovery time has individual variability. It should be noted that after the pupils are dilated, the amount of light entering the patient’s eyes increases, and the patient may experience adverse reactions such as photophobia, blurred vision, flushing, increased body temperature, dry mouth, dry skin, allergies, nausea, vomiting, and so on. During the period of pupil dilation, patients may wear sun hats or sunglasses when going out and avoid driving, etc., to relieve the discomfort symptoms. It is recommended that patients who experience discomfort after dilation should consult a doctor promptly to assess their condition and follow the doctor’s instructions for treatment.