配戴RGPCL与框架眼镜对青少年近视调节滞后的研究

目的:探讨配戴硬性透气性角膜接触镜(rigid gas permeable contact lens,RGPCL)、框架眼镜对青少年近视眼调节滞后(lag of accommodation)的差异.方法:对57例114眼10~15岁初诊的中、低度近视眼,行医学验光、角膜曲率和角膜地形图检查,根据家长意愿其中27例患者选择配戴RGPCL,30例患者配戴框架眼镜.两组在最佳矫正视力的基础上,采用低度中和动态检影法测定调节滞后量.配戴期间每3mo复查1次,1a后用同样方法再次测定调节滞后量进行对比分析.结果:眼调节滞后量,两组对比差异无统计学意义(F=1 961,P=0.121).1a后,RGPCL组坚持配戴者25例50眼,调节滞后量对比差异无统计学意义(P＞0.05);框架眼镜组27例54眼调节滞后量对比差异有统计学意义(F=4.658,P＜0.05);两组对比差异有显著统计学意义(F=6.134,P＜0.01).结论:配戴RGPCL眼调节滞后量明显小于框架眼镜,对减缓青少年近视进展可有一定作用,应大力推广.

Study of RGPCL and frame glasses on accommodative lag in student myopia

AIM:To discuss the differences between rigid gas permeable contact lens(RGPCL) and frame glasses in juvenile myopia accommodative lag.METHODS:Fifty-seven newly diagnosed,10 to 15 years old,moderate to low myopia patients(114 eyes)were examined with medical optometry,corneal curvature and corneal topography.According to the wishes of parents,27 patients chose RGPCL,30 patients chose frame glasses.Based on best-corrected visual acuity,accommodative lag was determined by low diopter neutralization dynamic retinoscopy method in two groups.The patients were reexamined one time every 3 months,accommodative lag was measured again using the same method for comparative analysis after 1 year.RESULTS:Eye accommodative lag had no significant difference between the two groups(F=1.961,P=0.121).After 1 year,25 patients(50 eyes) adhered to wearing glasses in RGPCL group,the amount of accommodative lag was no significant difference(P>0.05);27 patients(54 eyes) adhered to wearing glaeees in frame glasses group,the amount of accommodative lag was significantly different(F=4.658,P<0.05);comparing the two groups(F=6.134,P<0.01).CONCLUSION:Accommodative lag in RGPCL-wearing eye was significantly less than that in frame glasses-wearing eye,which may have a role in slowing progress of juvenile myopia and should be vigorously promoted.