When a 7 year old child has his/her first optometric examination, the results are generally accurate if he/she is not farsighted and if the pupils are dilated quickly. Dilated pupils are commonly used in children’s optometry to paralyze the ciliary muscle inside the eyeball, eliminating the interference of the ciliary muscle’s adjusting factor on the results of the optometry, so as to get an accurate reading. Generally speaking, for patients without hyperopia, rapid pupil dilation, i.e., dilating the pupil with compound tropicamide eye drops, etc. can get accurate results, but for children with hyperopia, rapid pupil dilation results are usually inaccurate, and it is necessary to do slow pupil dilation with atropine eye drops or atropine eye ointment in order to get accurate results. Whether a child needs to have a fast or slow pupil dilation for an astigmatism examination is a decision that should be made by the doctor after an interview and cannot be made by the patient himself or herself.