角膜塑形镜对调节滞后及调节性集合与调节的比值的影响  

Effects of orthokeratology lenses on the magnitude of accommodative lag and accommodative convergence/accommodation

作　　者：任秋锦[1] 岳辉[1] 周清[1] 

机构地区：[1]长沙市第四医院眼科,长沙410000

出　　处：《中南大学学报（医学版）》2016年第2期169-173,共5页Journal of Central South University ：Medical Science

基　　金：长沙市科技局科研项目(K1203048-3)~~

摘　　要：目的:研究近视患者配戴角膜塑形镜后调节滞后量及调节性集合与调节的比值(accommodative convergence/accomodation,AC/A)的改变。方法:收集2011年10月至2013年10月在长沙市第四医院视光中心规范验配、随诊的低、中度青少年近视患者96例,其中配戴角膜塑形镜者(试验组)和配戴框架眼镜者各48例(对照组),使用融像性交叉柱镜法(FCC法)测量其注视眼前40 cm处视标时的调节滞后量,采用Von Grafe法检查视近处斜视度,梯度法测AC/A值。对两组的调节滞后量和AC/A值进行统计学分析。结果:与对照组比较,低、中度近视患者试验组在随访的1,3,6,12个月时AC/A值均减小,调节滞后量均减小(P<0.05)。结论:低、中度近视患者配戴角膜塑形镜与框架眼镜相比调节滞后量减少,并且角膜塑形镜可以降低高AC/A值,改善调节与集合的关系。角膜塑形镜是控制近视的一种有效方法。Objective： To evaluate the change in accommodative lag and accommodation convergence/accommodation（AC/A） aft er patients with myopia wear orthokeratology lenses.Methods： A total of 48 myopic subjects（a test group）, who wore orthokeratology lenses regularly, and48 myopic subjects（a control group）, who wore spectacles regularly, were enrolled for this study from January 2011 to January 2013 in Optometric Center, the Forth Hospital of Changsha. Accommodative lag was measured by fused cross cylinder method, where the patients should gaze at the front optotypes40 cm away. Gradient of the AC/A ratio was measured by Von Grafe method to check closer distance heterophoria. Accommodative lag and AC/A ratio were analyzed by statistics.Results： After 1-year follow-up, accommodative lag and AC/A rate in patients with low or moderate myopia in the test group was decreased in 1, 3, 6 months or 1 year compared with that in the control group（P0.05）.Conclusion： Compared with spectacles, orthokeratology lenses are able to decrease accommodative lag and high AC/A rate in patients with low or moderate myopia. The relationship between accommodation and convergence is improved by orthokeratology lenses. Orthokeratology is an effective way to control myopia.

关 键 词：角膜塑形镜 调节滞后 AC/A值 近视 

分 类 号：R778.3[医药卫生—眼科]