Many parents still worry about dilated pupils, but there is no need to do so, as long as the doctor has checked that the pupil meets the criteria for dilatation, that there is no high intraocular pressure or shallow anterior chamber, and that there is no special reason why the pupil cannot be dilated. For children under the age of six, a long-acting dilating agent, atropine eye gel, should be used to obtain an accurate prescription, especially in patients with hyperopia or internal strabismus. For people aged 6-12, if there are no special circumstances, you can use a short-acting pupil dilator, such as Safeguard, which can basically achieve the effectiveness of atropine, so it is generally recommended to use this, which can restore the pupil in three days and has less impact on normal life and learning. 12 years old and above, it is recommended to use compound tropicamide, which may be effective for six hours later and does not affect the pupil size too much, and will return to its original size normally. The pupil size will return to the original size. When checking vision, myopic eyes should be examined once before the pupil is dilated, once after the pupil is dilated, and again after the pupil has recovered, and the results of several examinations will be combined to arrive at a suitable degree of myopia for the patient to be fitted.