“Many parents are asking who is better for myopia control of corneal shaping and low-concentration atropine?” We specifically consulted a retrospective cohort study published by Taiwan scholar Lin in 2014 to answer this question. & nbsp. In this study, Asian children aged 7 to 18 years old, myopic power ranging from -1.50D to -7.50D, cylindrical lens not exceeding -1.50D, and anisometropia not exceeding 2.00D were reviewed. 105 patients (210 eyes) wearing orthokeratology group were compared with 105 patients (210 eyes) at 0.125% atropine group every night, and were followed up for three consecutive years. The study compared the results of the computerized optometry of the eye axis and ciliary muscle paralysis in the two groups (the corneal orthopedic group was tested for ciliary muscle paralysis after being stopped for 3 weeks) (Table 1). The eye axis growth of the OK lens group is 0.27 ~ 0.30mm per year, and the atropine group is 0.36 ~ 0.38mm; the myopia (refractive power) growth of the OK lens group is 0.28 ~ 0.29D, and the myopia of the atropine group is 0.31 ~ 0.35D. The astigmatism of the OK lens group and the atropine group did not change much. Therefore, whether it is evaluated by myopic diopter or eye axis growth, orthokeratology is better than 0.125% atropine. & nbsp. Table 1 Comparison of eye axis and myopia growth between OK lens group and 0.125% atropine group for 3 consecutive years & nbsp. In 0.125% atropine group, the baseline myopia power is high and the eye axis growth is relatively slow (myopia control effect is better); baseline myopia power is low , Eye axis growth is relatively fast (Figure 1). & nbsp. Figure 10.125% atropine group, the relationship between baseline myopia power and eye axis growth & nbsp. In the OK lens group, the baseline myopia power is high and the eye axis growth is relatively slow (myopia control effect is better); the baseline myopia power is low and the eye axis growth is relatively Fast (Figure 2). However, the slope of the OK lens group (r = 0.259) is larger than that of the atropine group (r = 0.169), that is, the rate of myopia control using the OK lens for high myopia is greater (the price of the OK lens for high myopia is higher). & nbsp. Figure 2 OK lens group, the relationship between baseline myopia power and eye axis growth. Summary 1. Low concentration atropine and corneal shaping are currently one of the most effective means of myopia control in children. The study found that orthokeratology is better than 0.125% atropine for myopia control. (Actually, the current myopia control effect of 0.01% atropine is still less than 0.125% atropine.) 2. For high myopia, whether using atropine or OK lens is better than low myopia, this relationship is in the cornea The shaping mirror group is more obvious. & nbsp.3. According to the current research, low-concentration atropine mainly has effect on myopic diopter control and no effect on myopic axis (please refer to the previous article: Parents Ask: Does low-concentration atropine control the axial axis or myopic power?); and Corneal shaping mainly controls the axis of the eye. (After wearing the OK lens, it is inconvenient to judge the change in diopter, so most studies use the eye axis as an evaluation index.) 4. In fact, the combination of the two has the best effect of myopia control, which will produce an effect of 1 + 1> 2. & nbsp. Note: Parents are requested to take their children to regular medical institutions and accept low-concentration atropine and corneal shaping techniques under the guidance of experienced optometrists! & nbsp. References LinHJ, WanL, TsaiFJ, etal.Overnightorthokeratologyiscomparablewithatropineincontrollingmyopia.BMCOphthalmol.2014.14: 40.