Purpose of pupil dilation: To fully paralyze the ciliary muscle and expose the truest refractive error, which is the accepted standard examination for refractive examinations at home and abroad. Dosing method: The child lies flat, gently pull down the lower eyelid, and put green bean-sized drops of atropine eye gel into the Between the white eye and the lower eyelid, 1 drop per eye. After medication, compress the inner corner of the eye with a finger for 3-5 minutes and wipe away the spilled medication with a tissue. Both eyes, 3 times a day for 3 days, optometry on the 4th day. Precautions: 1. Fear of light and unclear vision of near objects is a normal reaction, you can wear sunglasses or sun hat for protection, accompanied by parents, avoid doing some climbing and other dangerous movements, about 3 weeks, the pupil will gradually return to normal. 2, flushing, dry mouth, irritability phenomenon is the side effects of atropine eye gel, mostly related to the point of eye gel after not timely tight pressure at the inner corner of the eye, drink more water can help relieve the symptoms.