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角膜塑形镜治疗青少年近视眼角膜地形图参数分析
引用本文:刘兵,茹海霞,王华,陈威,杨春燕. 角膜塑形镜治疗青少年近视眼角膜地形图参数分析[J]. 中国斜视与小儿眼科杂志, 2014, 0(3): 1-4
作者姓名:刘兵  茹海霞  王华  陈威  杨春燕
作者单位:空军总医院眼科,100142
摘    要:目的分析青少年近视眼经角膜塑形镜矫正后角膜前表面的变化。方法回顾性分析青少年近视患者共75人150眼,年龄9—17岁,屈光状态:-4.23±1.82(-8.75—-0.75)Ds/-0.3±0.47(-2-0)Dc,等效球镜度数:-4.34±1.88(-9.13—-0.75)D,应用TomeyTMS-4角膜地形图观察角膜塑形镜治疗前后角膜形态学的改变。结果通过规范验配,150眼裸眼视力均达到1.0,没有严重并发症发生。角膜地形图资料显示平均Ks:41.19±1.73D,Kf:39.67±1.67D,AveK:40.43±1.61D,PVA:-0.01±0.09。0.11±0.08(LogMAR),Es:-0.14±0.47.Em:-0.39±0.34,SRI:0.49±0.33,SAI:0.84±0.60,与治疗前相比差异具有统计学意义。Cyl:1.48±0.96D,与术前差异无统计学意义。波动的平均值如下:Ks:0.82±0.83(0-3.88)D,Kf:0.69-t-0.75(0.01-4.54)D,Avek:0.71±0.75(0.01—3.51)D,Cyl:0.45±0.48(0.01-2.70)D,Es:0.27±0.31(0-1.14)。Em:0.18±0.24(0-1.51),Sri:0.19±0.20(0-1.02),Sai:0.40±0.55(0—3.65)。结论夜戴角膜塑形镜通过改变角膜前表面的角膜曲率和E值,提高青少年近视患者的裸眼视力,角膜的规则散光保持不变,但是角膜的潜视力值降低,角膜的不规则性增强。角膜地形图参数在-定波动范围内可以维持裸眼矫正视力稳定的。

关 键 词:近视  角膜塑形  角膜地形图

Assessment of corneal topography indices after orthokeratology correction for pediatric myopia
Affiliation:Liu Bing,Ru Hai-xia, Wang Hua, et al( Department of Ophthalmology, Air Force General Hospital, Beijing 100142, China)
Abstract:Objective To analysis anterior corneal surface shape changes in pediatric myopic overnight or-thokeratology. Methods Retrospective observational case series were observed. Tomey TMS -4 was used to receive corneal topographic data before and after overnight orthokeratology lens wear. Seventy-five pediatric myopic patients (150 eyes, age range: 9-17 years) were included. The myopia was -4.23±1.82 (range:-8.75--0.75) D, the astigmatism was -0.3±0.47 (range: -2-0) D, and spherical equivalent refraction was -4.34±1.88 (range: -9.13--0.75) D. Topog-raphy data was collected and analyzed when uncorrected visual acuity (UCVA) was 1.0. Results After normative or-thokeratology lens correction, UCVAs of one hundred and fifty eyes reached 1.0, and no severe complications were ob-served. The topography parameters showed that mean Ks:41.19±1.73D,Kf:39.67±1.67D,AveK:40.43±1.61D, PVA:-0.01±0.09-0.11±0.08 (LogMAR), Es:-0.14±0.47,Em:-0.39±0.34,SRI:0.49±0.33,SAI:0.84±0.60, and were significantly different from no lens wear. No significant change was observed in Cyl (1.48±0.96D) before and after lens wear. The fluctuation range above parameters’ means were ks:0.82±0.83 (0-3.88) D,Kf:0.69±0.75 (0.01-4.54) D,Avek:0.71±0.75 (0.01-3.51) D,Cyl:0.45±0.48 (0.01-2.70) D,Es:0.27±0.31 (0-1.14),Em:0.18±0.24 (0-1.51),Sri:0.19±0.20 (0-1.02),Sai:0.40±0.55 (0-3.65) . Conclusions Improved visual acuity after overnight wear of orthokeratology lens can be attributed to changes in anterior corneal curvature and E value. Corneal regular astigmatism remained unchanged, but corneal PVA reduced and corneal irregularity increased. Improved UCVA can be maintained within a certain fluctuation of topography parameters.
Keywords:myopia  orthokeratology  corneal topography
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