摘要
目的 探讨配戴角膜塑形镜后反转弧区的高度差(AHDCAP)与眼轴间的关系,分析其与近视进展的相关性.方法 收集 2018-01 至 2020-01 在山西爱尔眼科医院诊断为近视配戴角膜塑形镜 300 例患儿的右眼资料(300 眼)进行回顾性研究,按照年龄将患者分成 8～9 岁、10～12 岁、13～15 岁三组;根据等效球镜分为-1.00 D～-2.00 D组、-2.25 D～-4.00 D组、-4.25 D～-6.00 D组,分析不同年龄组、不同近视度数配戴角膜塑形镜后眼轴增长情况及配戴角膜塑形镜后AHDCAP与眼轴的关系.结果 不同年龄组儿童的眼轴增长量分别是 0.31(0.20,0.43)mm、0.18(0.07,0.30)mm 和 0.12(0.04,0.24)mm组之间比较有统计学差异(χ2=48.36,P<0.001).不同近视组配戴角膜塑形镜 1 年后眼轴增长量分别为 0.32(0.15,0.43)mm、0.24(0.11,0.32)mm和 0.13(0.04,0.23)mm,三组之间比较有统计学差异(χ2=36.95,P<0.001).不同近视组配戴角膜塑形镜 1 年后 AHDCAP 值分别为 12.25(8.25,17.75)μm、12.88(10.69,19.38)μm 和 20.75(13.94,24.09)μm,三组之间比较有统计学差异(χ2=57.50,P<0.001).AHDCAP与等效球镜呈负相关(r=-0.394,P<0.001),AHD-CAP与眼轴增长亦呈负相关(r=-0.829,P<0.001).结论 配戴角膜塑形镜后AHDCAP越小,眼轴增长越快,近视发展越快;反之AHDCAP越大,眼轴增长越慢,近视控制越好.增加AHDCAP有利于控制近视儿童的眼轴增长.
Abstract
Objective To explore the relationship between the average height difference between flattening central cornea and relatively steepening mid-peripheral cornea(AHDCAP)on axial length(AL)after wearing orthokeratology lenses and to analyze the correlation between AHDCAP and myopia progression.Methods A retrospective study was conducted on 300 patients(300 eyes)di-agnosed with myopia and wearing orthokeratology lenses at Aier Eye Hospital from January 2018 to January 2020.They were divided in-to 3 groups according to age:8-9 years old,10-12 years old and 13-15 years old,and into 3 groups according to the equivalent spherical refraction:-1.00 D--2.00 D,-2.25 D--4.00 D and-4.25 D--6.00 D.The growth of AL and the relationship be-tween AHDCAP and AL after wearing orthokeratology lenses were analyzed in different age groups and different myopia degrees.Results The increases of AL in different age groups were 0.31(0.20,0.43)mm,0.18(0.07,0.30)mm and 0.12(0.04,0.24)mm,respectively,with significant differences among the three groups(χ2=48.36,P<0.001).After 1 year of wearing orthokeratology lenses in different myopia groups,the increase of AL was 0.32(0.15,0.43)mm,0.24(0.11,0.32)mm and 0.13(0.04,0.23)mm,respectively,with significant differences among the three groups(χ2=36.95,P<0.001).The AHDCAP values of different myopia groups after wearing orthokeratology lenses for 1 year were 12.25(8.25,17.75)μm,12.88(10.69,19.38)μm and 20.75(13.94,24.09)μm,respectively,with significant differences among the three groups(χ2=57.50,P<0.001).AHDCAP was negatively cor-related with both equivalent spherical lens(r=-0.394,P=0.000)and AL growth(r=-0.829,P=0.001).Conclusions The smal-ler the AHDCAP,the faster the AL growth and myopia development after wearing orthokeratology lenses.On the contrary,the larger the AHDCAP,the slower the AL growth and myopia development.Increasing AHDCAP is beneficial to control AL growth in myopic children.
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