角膜塑形镜对青少年近视眼 AC/A 的影响

目的：分析青少年近视患者在配戴角膜塑形镜和框架眼镜后对 AC/A 的不同影响。方法对23例（46眼）配戴角膜塑形镜和34例（68眼）戴框架眼镜的青少年近视患者，观察1年后两组患者的屈光度和 AC/A 值。结果戴镜1年后，角膜塑形镜组平均屈光度增加了0.35±0.25D ，框架镜组平均屈光度增加了0.82±0.36D ，两组差异有统计学意义（P＜0.05）。角膜塑形镜组平均 AC/A 值降低了0.83±0.23，框架镜组增加了0.12±0.06，两组差异有统计学意义（P＜0.05）。结论角膜塑形镜可以有效减缓青少年的近视加深，降低 AC/A 值，使患者的调节与集合的关系更加协调。

The effection of AC/A with orthokeratology lens on adolescent myopia patients

Objective To analyse different effects on AC/A between after wearing orthokeratology lenses and glasses in juvenile myopia patients. Methods 23 patients （46 eyes） received orthokeratology lens trement and 34 pa-tients （68 eyes） received glasses in adolescent myopia patients,and then diopter and AC/A values were measured af-ter 1 year. Results The average diopter value increased 0.35 ± 0.25D in orthokeratology lens group to compare with 0.82 ± 0.36D in wearing glasses group after 1 year, and there was statistically significant difference （P〈0.05） ; The average AC/A values decreased 0.83±0.23 in orthokeratology lens group to compare with 0.12 ± 0.06 in wearing glasses group after 1 year, and there was statistically significant difference （P〈0.05） . Conclusions Orthokeratology lens can effectively slow down the progression of myopia in adolescent patients, and reduce AC/A values to balance between the accommodation convergence and accommodation.