Comparison of different orthokeratology lenses in controlling the progression of low-myopia in children
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摘要:
目的 比较不同型号角膜塑形镜控制儿童低度近视的效果,为探讨保护儿童视力的有效防治措施提供参考。 方法 收集前往山东中医药大学附属眼科医院就诊的8~12岁初次佩戴角膜塑形镜患者的资料175例(350只眼),回顾性分析佩戴Mouldway,Alpha,Lucid,CRT 4种不同型号角膜塑形镜1年后眼轴长度(AL)和等效球镜度(SER)变化的差异,分析眼AL变化量、SER变化量与性别、年龄的关系。 结果 Mouldway组、Alpha组、Lucid组和CRT组AL变化量M(P25,P75)分别为0.23(0.12,0.41)、0.30(0.17,0.45)、0.35(0.16,0.41)和0.33(0.23,0.41)mm,差异无统计学意义(Z=7.70,P>0.05);4组SER变化量M(P25,P75)分别为-0.31(-1.00,0.28)、-0.38(-1.22,0.13)、-0.25(-0.84,0.13)和-0.63(-1.13,0.25)D,差异无统计学意义(Z=2.15,P>0.05)。年龄与AL变化量呈负相关(r=-0.26,P < 0.05),与SER变化量相关无统计学意义(r=0.10,P>0.05)。不同性别儿童AL变化量(Z=-2.25)和SER变化量(Z=-1.50)差异均无统计学意义(P值均>0.05)。 结论 不同型号角膜塑形镜在控制低度近视儿童眼轴增长和改变眼球屈光状态效果没有显著差异。 Abstract:Objective To compare the effect of different orthokeratology lenses in controlling the progression of low-myopia in children, and to provide a reference for exploring effective prevention measures for eyesight of children. Methods A total of 175 cases (350 eyes) aged 8-12 years old who were fitted with orthokeratology lenses were collected in this retrospective study. The differences in the changes of the axis length (AL) and the spherical equivalent refraction (SER) were analyzed after wearing different orthokeratology lenses for one year, and the relationship between the change of AL, SER and gender, age was also analyzed. Results In the Mouldway group, Alpha group, Lucid group and CRT group, the Median (P25, P75) of AL changes were 0.23 (0.12, 0.41), 0.30 (0.17, 0.45), 0.35 (0.16, 0.41) and 0.33 (0.23, 0.41)mm, and there were no statistical significant difference between four groups (Z=7.70, P>0.05); The Median (P25, P75) of SER changes were -0.31 (-1.00, 0.28), -0.38 (-1.22, 0.13), -0.25 (-0.84, 0.13) and -0.63 (-1.13, 0.25)D, and there were no statistical significant difference between four groups (Z=2.15, P>0.05). The age had negative correlation with the change of AL (r=-0.26, P < 0.05), but has nothing to do with the change of SER (r=0.10, P>0.05). There was no statistically significant difference in the change of AL (Z=2.25, P>0.05) and SER (Z=-1.50, P>0.05) among children of different genders. Conclusion Different orthokeratology lenses have no differences in controlling the growth of the AL and changing the SER. -
Key words:
- Orthokeratologic procedures /
- Eyeglasses /
- Myopia /
- Child
1) 利益冲突声明 所有作者声明无利益冲突 -
表 1 4种角膜塑形镜参数
Table 1. Parameters of the Ortho-K lenses
名称 设计 材料 湿润角/(°) 透光率/% 折射率/% 中心厚度/mm Mouldway VST Boston XO 49 87 1.42 0.24 Alpha VST Boston EM 35 85 1.42 0.22 Lucid VST Boston XO 49 87 1.42 0.23 CRT CRT HDS100 42 95 1.44 0.16 注:VST(vision shaping treatment,视觉塑形治疗),CRT(corneal refractive therapy,角膜屈光疗法)。 表 2 配戴不同型号角膜塑形镜儿童AL、SER比较[M(P25,P75)]
Table 2. Comparison of data for different groups of children [M(P25, P75)]
组别 人数 AL基线/mm SER基线/D AL变化量/mm SER变化量/D Mouldway 55 24.36(23.74,25.03) -2.00(-2.25,-1.50) 0.23(0.12,0.41) -0.31(-1.00,0.28) Alpha 42 24.14(23.69,24.73) -2.25(-2.72,-1.75) 0.30(0.17,0.45) -0.38(-1.22,0.13) Lucid 30 24.50(23.86,24.80) -1.88(-2.25,-1.50) 0.35(0.16,0.41) -0.25(-0.84,0.13) CRT 48 24.22(23.77,24.83) -1.94(-2.50,-1.50) 0.33(0.23,0.41) -0.63(-1.13,0.25) Z值 4.69 1.78 7.70 2.15 P值 0.20 0.62 0.05 0.54 -
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