저간섭성반사계와 부분결합간섭계를 이용한 안구생체계측과 백내장 수술 후 굴절력 예측의 비교

Comparison of Ocular Biometry and Postoperative Refraction in Cataract Patients Between Lenstar? and IOL Master?

Purpose: To compare axial length, anterior chamber depth, and keratometric measurements of an optical low-coherence reflectometry device with those of other ocular biometry devices and evaluate the accuracy of predicting postoperative refraction. Methods: A total of 32 eyes in 32 patients who received cataract surgery were included in the present study. The axial length, anterior chamber depth, and keratometry were measured by optical low-coherence reflectometry (Lenstar LS900?), partial coherence interferometry (IOL master?), and ultrasound. The SRK/T formula was used to calculate IOL power, and predictive error that subtracts predictive refraction from postoperative refraction was compared among ocular biometry devices. Results: Axial length, anterior chamber depth, and keratometry had a strong correlation and demonstrated no statistically significant differences between Lenstar LS900? and other devices. The Bland–Altman plots showed a high degree of agreement between Lenstar LS900? and other devices. The mean absolute prediction errors in Lenstar LS900? and IOL master? were not significantly different. Conclusions: The ocular biometric measurements and prediction of postoperative refraction using Lenstar LS900? were as accurate as IOL master? and ultrasound. J Korean Ophthalmol Soc 2012;53(6):833-838