The summer and winter holidays are a time of year for most students to take it easy, but if you have poor or declining vision, then don’t forget to go to the hospital for an early optometry while having fun and relaxing. Today, as the incidence of myopia among our youth increases and parents pay more and more attention to their children’s low vision, more and more teenagers need to undergo an optometry. Theoretically, dilated optometry can reflect the actual refractive state of the human eye to the greatest extent possible. In children and adolescents, due to their strong adjustment, the prescription obtained without dilated pupils (e.g., computerized optometry) often differs significantly from the actual prescription. Therefore, we advocate that adolescents under 10 years of age should have their pupils dilated with atropine to paralyze the ciliary muscles and remove the regulating effect in order to obtain the correct refraction. Since the eyes lose their ability to adjust after the pupil is dilated, there will be a blurring of the eyes when looking at near objects, which will affect the child’s ability to read and write. It takes about three weeks for the whole process of optometry to be in a state where the child cannot see near objects clearly, so we recommend that optometry be conducted during the holidays, especially the two-month-long summer vacation, so that there is enough time for optometry and to complete holiday homework and courses so as not to interfere with school. Youth optometry and the following points need to be stressed: 1, low vision is not necessarily myopia, many may be farsighted, or astigmatism, amblyopia, etc., even if myopia and pseudophakia, true, so parents should pay attention to, not arbitrarily, without formal optometry for children with myopic glasses. The best way to identify the above refractive states is to dilate the pupil for optometry. 2, due to the long duration of optometry, before and after about four weeks (a week of medication, after the first optometry stop point three weeks after retesting), and the need to go to the hospital three or four times as much, I hope that parents from the perspective of children, do not mind the trouble, as far as possible to go to the hospital for regular dilated pupil optometry. 3, 1% atropine eye solution usage: two to three times a day, one drop each time, both eyes must be drops, continuous week after the optometry. After each drop, you need to press the inner corner of the eye with your finger for 5 minutes. 4.After the drops, you may experience flushing, thirst, photophobia, blurred vision, etc. These are normal. If the reaction is more serious, you should go to the hospital promptly. 5.For children with hyperopia and amblyopia, the test should be repeated once a year because the degree of hyperopia often decreases with the growth and development of children. 6, no organic eye lesions, but the visual acuity is still lower than 0.8 is called amblyopia. Such children, in addition to annual optometry and glasses, need to be treated under the guidance of a doctor, and the earlier the treatment, the better the results.