Pentacam法测量近视激光术后角膜屈光力的准确性研究  

Accuracy evaluation of Pentacam in measurement of corneal refractive power after myopic excimer laser surgery

作　　者：查桂平[1,2] 陆勤康[1,2] 赖晓明[1,2] 童奇湖[1,2] 

机构地区：[1]宁波大学医学院附属鄞州医院 [2]宁波市鄞州人民医院眼科中心,浙江宁波315040

出　　处：《中国临床药理学杂志》2015年第19期1974-1976,共3页The Chinese Journal of Clinical Pharmacology

基　　金：宁波市科技计划项目基金资助项目(2012C50029)

摘　　要：目的评价Pentacam法测量近视激光术后角膜屈光力的准确性。方法将白内障手术患者15例(19眼)于术后用Pentacam法测量角膜等效屈光力(EKR),用临床病史法及非接触式光学相干生物测量仪(IOL-Master)方法测量角膜屈光力。比较3种方法术后角膜屈光力的中值绝对误差(Med AE)、平均绝对误差(MAE),以及3种方法术后的屈光误差。结果 Pentacam法中角膜屈光力的Med AE、MAE均明显低于临床病史法、IOL-Master法(P<0.05),Pentacam法的角膜屈光力明显低于IOL-Maste法(P<0.05)。在±0.25 D、±0.50 D、±1.00 D范围内,Pentacam法的眼数均明显高于IOL-Master法(P<0.05)。结论 Pentacam法能准确测算近视激光术后人工晶状体度数,在术前相关资料缺失时,Pentacam法可以替代临床病史法计算准分子角膜屈光术后角膜屈光力。Objective To evaluate the accuracy of corneal power measurements by a rotating scheimpflug camera（ Pentacam） in eyes after myopic excimer laser surgery. Methods This prospective comparative interventional case series comprised 19 eyes of 15 patients who had myopic excimer laser surgery. Used Pentacam,clinical history method and IOL- Master measured keratometry reading. The median absolute error（ Med AE）,the mean absolute error（ MAE） and postoperative refractive error were compared among three methods. Results Med AE and MAE of Pentacam EKR method were significantly lower than those of clinical history and IOL- Master methods（ P〈0. 05）. Keratometry reading were significantly lower than that of IOL- Maste method（ P〈0. 05）. During the ± 0. 25 D, ± 0. 50 D, ± 1. 00 D range,eye number ratio of EKR method was significantly higher than that of IOL- Master method（ P〈0. 05）. Conclusion Pentacam EKR can accurately measure the intraocular lens power. When historical refractive data are not available,scheimpflug imaging with the Pentacam provides an alternative method of measuring the central corneal power in eyes that previously received corneal refractive surgery.

关 键 词：等效角膜屈光力 人工晶状体度数计算 屈光手术 

分 类 号：R770.4[医药卫生—眼科] R779.6[医药卫生—临床医学]