CAJ | 학술논문

目的建立根据角膜地形图前表面曲率变化预测准分子激光术后屈光回退的一种方法。方法根据准分子激光术后327眼手术前后角膜地形图角膜前表面曲率变化值X与临床屈光度变化值Y得出两者关系Y＝0.062 7 X2＋1.153 4 X，随访过程中根据X算出所矫屈光度，若预矫屈光度大于0.062 7 X2＋1.153 4 X＋0.5，则作为屈光回退患者，与术后实际屈光回退情况进行比较。结果随访观测309眼，实际屈光回退59眼，依本方法预测出回退的101眼中日后实际回退47眼，预测灵敏度79.66％，预测特异度78.40％。结论角膜地形图在准分子激光术后屈光回退的预测中有一定的意义，可作为预测屈光回退的一种方法。
목적건립근거각막지형도전표면곡솔변화예측준분자격광술후굴광회퇴적일충방법。방법근거준분자격광술후327안수술전후각막지형도각막전표면곡솔변화치X여림상굴광도변화치Y득출량자관계Y＝0.062 7 X2＋1.153 4 X，수방과정중근거X산출소교굴광도，약예교굴광도대우0.062 7 X2＋1.153 4 X＋0.5，칙작위굴광회퇴환자，여술후실제굴광회퇴정황진행비교。결과수방관측309안，실제굴광회퇴59안，의본방법예측출회퇴적101안중일후실제회퇴47안，예측령민도79.66％，예측특이도78.40％。결론각막지형도재준분자격광술후굴광회퇴적예측중유일정적의의，가작위예측굴광회퇴적일충방법。
ObjectiveTo develop a method to predict the regression after laser refractive surgery from corneal topography．MethodsThe database of 327 eyes（176 patients）who had laser in situ keratomileusis（LASIK）or photorefractive k-eratectomy（PRK）was reviewed．There was correlation between the ratio of the clinical refractive reduction to the corneal refractive reduction（A）and the corneal refractive reduction（X）：A＝0.0627 X＋1.153 4，r＝0.602 9，P＜0.001．The relationship between clinical refractive change（Y）and corneal refractive change（X）between pre- and post-operation was Y＝0.062 7 X2＋1.153 4 X．The relation was used to predict the regression in the follow-up．The eye was predicted to be of regression if 0.062 7 X2＋1.153 4 X＋0.5＜the attempt refraction in any time of the follow-up．The results were compared with that of actual regression．Results309 eyes were followed up for more than 6 months，101 eyes were predicted to have regression from corneal topography，and 47 eyes of them were actual regression．There were 59 eyes of regression among 309 eyes．The predictive sensitivity was 79.66％，and the specificity was 78.40％．ConclusionIt may be clinically useful in the prediction of regression after laser refractive surgery from corneal topography．