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目的观察虚焦镜控制近视发展的作用。方法门诊随机选取轻、中、高度近视患者260例配戴虚焦镜作为治疗组,年龄7～20岁,观察近视发展情况及每天配戴虚焦镜时间与疗效的关系,并与200例年龄及屈光构成相似的近视患者对照。两组病人均观察2～4年。结果戴虚焦镜组总有效率83.1%,共有140眼近视有不同程度的增加,占本组总眼数26.9%,其中屈光度增加<0.50D 者52眼,0.50D～1.00D 者62眼,>1.00D 者26眼; 对照组共有240眼近视屈光度增加,占本组总眼数60.0%,其中屈光度增加<0.50D 者88眼,0.50D～1.00D 者98眼,>1 00D 者54眼,两组问有显著差异(P<0.005)。治疗组每天戴虚焦镜1小时、2小时、3小时的疗效比较, 其差异有显者性(P<0.05)。结论虚焦镜有明显控制学生近视发展的作用,每天戴镜时间越长,控制效果越好。
Objective To observe the role of virtual focal lens in controlling the development of myopia. Methods Outpatients were randomly selected 260 cases of mild, moderate and high myopia patients wearing virtual lens as the treatment group, aged 7 to 20 years old, to observe the development of myopia and daily wear virtual focal lens time and efficacy, and 200 cases of age And refractive constitute a similar myopic control. Two groups of patients were observed 2 to 4 years. Results The total effective rate of wearing virtual lens group was 83.1%, a total of 140 eyes of myopia increased in varying degrees, accounting for 26.9% of the total number of eyes in this group, including 52 eyes with <0.50D refraction, 62 eyes with 0.50D ~ 1.00D, > 1.00D, 26 eyes. In control group, 240 eyes had a total of 240 eyes with myopia, accounting for 60.0% of the total eyes, 88 eyes with <0.50D diopter increase, 98 eyes with 0.50D ~ 1.00D, 54 eyes> 100D There was a significant difference between the two groups (P <0.005). The treatment group every day wearing virtual mirror 1 hour, 2 hours, 3 hours of treatment, the difference was significant (P <0.05). Conclusions Virtual focal lens can obviously control the development of myopia. The longer the wearing time is, the better the control effect is.