CAJ | 학술논문

目的探讨合并有角膜瘢痕的外伤性白内障人工晶状体(intraocularlens,IOL)屈光度精确的计算方法.方法对行超声乳化术治疗的合并有角膜瘢痕的外伤性白内障患者51例(51只眼)进行前瞻性研究.对于同一患者,收集其术前应用Orbscan-Ⅱ所测得的患眼5mm光学区角膜曲率值,并代入SRK/T公式计算得到的IOL屈光度为实验组;收集其术前用角膜曲率计测量的健眼角膜曲率值,并代入SRK/T公式计算所得到的IOL屈光度为对照组(术中按常规以此组结果植人IOL);收集其术后3个月行电脑和检影验光获得的患眼屈光状态,并折算为等效球镜值,以植人的IOL屈光度+等效球镜值×1.25得到的IOL屈光度为标准组.比较各组间IOL屈光度的差别.结果实验组与对照组IOL屈光度比较,两者差异具有统计学意义(P＜0.05);标准组与对照组IOL屈光度比较,两者差异亦具有统计学意义(P＜0.05).实验组与标准组IOL屈光度比较,其差异无统计学意义.结论对合并有角膜瘢痕的外伤性白内障,应用Orbscan-Ⅱ测得的角膜曲率值计算IOL屈光度更接近患眼的屈光状态.
목적 탐토합병유각막반흔적외상성백내장인공정상체(intraocularlens,IOL)굴광도정학적계산방법.방법 대행초성유화술치료적합병유각막반흔적외상성백내장환자51례(51지안)진행전첨성연구.대우동일환자,수집기술전응용Orbscan-Ⅱ소측득적환안5mm광학구각막곡솔치,병대입SRK/T공식계산득도적IOL굴광도위실험조;수집기술전용각막곡솔계측량적건안각막곡솔치,병대입SRK/T공식계산소득도적IOL굴광도위대조조(술중안상규이차조결과식인IOL);수집기술후3개월행전뇌화검영험광획득적환안굴광상태,병절산위등효구경치,이식인적IOL굴광도+등효구경치×1.25득도적IOL굴광도위표준조.비교각조간IOL굴광도적차별.결과 실험조여대조조IOL굴광도비교,량자차이구유통계학의의(P＜0.05);표준조여대조조IOL굴광도비교,량자차이역구유통계학의의(P＜0.05).실험조여표준조IOL굴광도비교,기차이무통계학의의.결론 대합병유각막반흔적외상성백내장,응용Orbscan-Ⅱ측득적각막곡솔치계산IOL굴광도경접근환안적굴광상태.
Objective To study the precise method of IOL power calculation in traumatic cataract with comeal scar.Methods In this prospective study,51 eyes of 51 cases of traumatic cataract with corneal scar were underwent phacoemulsification and IOL implantation by identical operator.The preoperative corneal curvature value surveyed by Orbscan-Ⅱ corneal topograph and the corresponding IOL power which was caculated with SRK/T formula were collected,as experimental group.Meanwhile the normal ocular corneal curvature value surveyed by manu-keratometer and the corresponding IOL power were also collected,as control group(IOL were implanted according to the results in operation).3 months after operation the cases accepted computer and retinoscopy optometry examination.The results of refractive error were converted into the degree of equivalent spherical glass,then the degree×1.25 was added to the IOL power which had been implantated,the final results were as the standarded group.At last,these data were compared.Results The control group compared with the experimental group,the data were significant difference.The result was same between the control group and the standard group.But the experimental group compared with the standard group,the data were not different.Conclusions Caculating IOL power with the coneal curvature value surveyed by OrbscanⅡ corneal topography is a better method to traumatic cataract with corneal scar.it can reduce the refractive error after operation.