한국인 정상안을 대상으로 서로 다른 수차계로 측정된 안구 수차 값의 비교

Comparison of Aberrations in Korean Normal Eyes Measured With Two Different Aberrometers

Purpose: To compare ocular higher order aberrations measured by two different aberrometers in a sample of normal eyes. Methods: We included 41 normal eyes of Koreans in this study. Ocular aberration data were obtained through three measurements per eye using Zywave and OPD-Scan devices. Spherical equivalent and higher order aberrations calculated in the central 6 mm zone and expressed as root mean square (RMS) values were analyzed. Results: A comparison of measurements between the Zywave and OPD-Scan devices demonstrated no statistically significant differences in the RMS values of total higher order aberration (p=0.11), but significant differences were detected in the RMS values of total spherical aberration, total coma and total trefoil (p<0.01). Conclusions: The two different aberrometers that we tested are suitable for taking repeated measurements and are internally consistent, but not interchangeable. J Korean Ophthalmol Soc 2009;50(12):1789-1794