Accuracy evaluation of Pentacam in measurement of corneal refractive power after myopic excimer laser surgery
10.13699/j.cnki.1001-6821.2015.19.027
- VernacularTitle:Pentacam法测量近视激光术后角膜屈光力的准确性研究
- Author:
Gui-Ping ZHA
1
;
Qin-Kang LU
;
Xiao-Ming LAI
;
Qi-Hu TONG
Author Information
1. 宁波大学 医学院 附属鄞州医院/宁波市鄞州人民医院眼科中心
- Keywords:
equivalent keratometry reading;
intraocular lens power calculation;
refractive surgery
- From:
The Chinese Journal of Clinical Pharmacology
2015;31(19):1974-1976
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the accuracy of corneal power mea-surements 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 ( MedAE ) , the mean absolute error ( MAE ) and postoperative re-fractive error were compared among three methods.Results MedAE 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.
