硬性透氧性角膜接触镜对儿童高度近视的矫治效果

Effect of rigid gas permeable contact lenses in controlling the progress of high myopia in children

目的:评价硬性透氧性角膜接触镜(rigid gas permeable contact lens,RGPCL)对儿童高度近视的矫治作用。方法:对20例40眼14岁以下高度近视的儿童验配RG-PCL,同时将20例40眼戴框架眼镜高度近视的儿童作为对照组,1a内定期复查其眼的屈光度、角膜屈折力及眼轴长度。结果:RGPCL组矫正视力明显优于框架眼镜组,两组差异有显著性意义;1a后的近视屈光度平均增加,RGPCL组为0.59±0.42D,框架眼镜组1.07±0.53D,两者差异有显著性意义(P<0.05);角膜屈折力平均减少,RGPCL组为0.22±0.19D,框架镜组为0.02±0.10D,两组间差异有显著性意义(P<0.05);眼轴平均增长,RGPCL组为0.29±0.20mm,框架眼镜组为0.49±0.25mm,两者差异有显著性意义(P<0.05)。结论:RGPCL可能由于提供了更好的视觉质量及更好地矫正了散光,在一程度上使角膜变平且减缓眼轴增长,从而起到阻止高度近视快速发展的作用。

AIM ; To study the effect of rigid gas permeable contact lenses （RGPCL） in controlling the progression of high myopia in children. METHODS： Twenty high myopic children （40 eyes） were selected to wear RGPCL, and another 20 high myopic children were selected as controls by wearing spectacles. The study was done over 1 year. The evaluation included refraction, corneal curvature radius and axial length. RESULTS： RGPCL contact lenses can provide a significant improvement in visual acuity compared to spectacle correction for high myopia in children （P 〈 0.05）. Our study showed that the mean increase in myopia was 0.59 ±0.42D in the RGPCL group, and 1.07 ± 0.53D in the control group. There was a significant difference between the 2 groups （ P 〈 0. 05）, The mean corneal flattening in the RGPCL 2 group was 0.22 ± 0. 19D, and 0.02 ± 0.10D in the control group. There was a significant difference between the 2 groups （ P 〈 0.05）. The mean increase in axial length was 0.29 ± 0.20ram in the RGPCL group and 0.49 ±0.25mm in the control group. There was a significant differenc between the 2 groups （ P〈 0.05）. CONCLUSION： RGPCL had a significant effect in controlling rapid high myopia progress by flattening the cornea and slowing the increase in axial length.