配戴软性角膜接触镜对Pentacam角膜地形图中BAD系统关于角膜扩张分析结果的影响  

The influence of soft contact lens on Belin/Ambrósio enhanced ectasia display of Pentacam corneal topography

作　　者：钱丹 刘李娜 胡琴 李亚林 白继 Qian Dan;Liu Lina;Hu Qin;Li Yalin;Bai Ji(Baiji Ophthalmology Clinic of Chongqing,Chongqing 400042,China)

机构地区：[1]重庆白继眼科门诊部,重庆400042

出　　处：《中华眼外伤职业眼病杂志》2023年第5期344-349,共6页Chinese Journal of Ocular Trauma and Occupational Eye Disease

摘　　要：目的探讨配戴软性角膜接触镜(SCL)对Pentacam角膜地形图中Belin/Ambrósio增强扩张显示(BAD)系统关于角膜扩张分析结果的影响。方法前瞻性系列病例研究。收集重庆白继眼科门诊2022年3至9月拟行角膜屈光手术术前检查且长期配戴SCL,停戴时间<1周的近视50例(50只右眼)为A组;未配戴过SCL的近视50例(50只右眼)为B组。所有病例均选右眼为研究对象。术前应用Pentacam角膜地形图及BAD系统角膜扩张分析功能检测角膜最薄点前表面高度值、5mm直径范围最大的角膜前表面高度值、角膜前表面高度偏差值(Df)、角膜后表面高度偏差值(Db)、角膜厚度进展偏差值(Dp)、角膜最薄点厚度偏差值(Dt)、Ambrósio角膜相对厚度偏差值(Da)、总偏差值(Do)。A组以自身为对照,对比初次检查时和停戴SCL后1个月时,Pentacam角膜地形图及BAD系统中上述参数的变化情况。结果A组Pentacam角膜地形图及BAD系统相关参数中,角膜最薄点前表面高度值(3.26±1.55)μm、Df(0.99±1.15)及Do(1.20±0.55),高于B组的(2.38±1.29)μm、(0.27±0.66)及(0.97±0.53),差异均有统计学意义(t/Z=3.09、-3.76、2.21,P=0.003、<0.001、0.030)。A组停戴SCL后1个月时角膜最薄点前表面高度值(2.80±1.39)μm、5mm直径范围最大的角膜前表面高度值(5.02±2.10)μm、Df(0.55±0.88)及Do(1.14±0.58),低于初次检查时的(3.26±1.55)μm、(5.58±2.12)μm、(0.99±1.15)及(1.20±0.55),差异均有统计学意义(t=3.34、4.16、4.44、2.03,P=0.002、<0.001、<0.001、0.048)。结论长期配戴SCL可使角膜前表面高度及Pentacam角膜地形图中BAD系统Df、Do值升高。停戴SCL后1个月对角膜前表面高度值及BAD系统影响减少。Objective To investigate the effect of soft contact lens(SCL)on the result from the Belin/Ambrósio enhanced ectasia display(BAD)of Pentacam corneal topography for corneal ectasia.Methods This was a prospective case series study.Fifty right eyes of 50 myopic patients were selected as group A,who planned to undergo preoperative examination of corneal refractive surgery after wearing SCL for a long time and stopped for less than 1 week,were enrolled in group A from Chongqing Baiji Ophthalmology Clinic from Mar.2022 to Sep.2022.Fifty right eyes of 50 myopic patients without wearing SCL were selected as group B.Pentacam corneal topography and BAD system were used to detect the anterior surface elevation values at the thinnest point of cornea,the maximum anterior surface elevation values in the central five millimeters diameter,the deviation of normality of front elevation(Df),the deviation of normality of back elevation(Db),the deviation of normality of pachymetric progression(Dp),the deviation of normality of corneal thinnest point(Dt),the deviation of normality of relational thickness(Da),the overall deviation of normality(Do).Patients in group A were compared with themselves as controls and changes of the above parameters in the Pentacam corneal topography and BAD system were compared between the primary examination and 1 month after the SCL was stopped.Results In Pentacam corneal topography and BAD system of group A,the anterior surface elevation values at the thinnest point of cornea,the Df values and the Do values were(3.26±1.55)μm,Df(0.99±1.15)and Do(1.20±0.55)respectively,which were higher than those of group B at(2.38±1.29)μm,(0.27±0.66)and(0.97±0.53),and the differences were statistically significant(t/Z=3.09,-3.76,2.21;P=0.003,<0.001,0.030).The anterior surface elevation values at the thinnest point of cornea and the maximum anterior surface elevation values in the central five millimeters diameter,the Df values and the Do values of discontinuation SCL for 1 month were(2.80±1.39)μm,(5.02±2.10)μ

关 键 词：近视 角膜 接触镜 角膜屈光手术 角膜扩张 

分 类 号：R772.2[医药卫生—眼科]