에이엘 스캔, 자동각막굴절계, 펜타캠의 각막 굴절력 비교 분석

Comparative Analysis of Corneal Refractive Power Measured with AL‐ScanⓇ Autokeratometer, and PentacamⓇ

<b>Purpose:</b> To investigate clinical availability of AL-ScanTM (Nidek, Gamagori, Japan) by comparing corneal refractive power with AL-ScanTM, AutokeratometerTM (Topcon KR-1, Tokyo, Japan) and PentacamTM (Oculus, Wetzlar, Germany) devices. <b>Methods</b>: Seventy-one patients (142 eyes) who visited our hospital for refractive surgery were tested using AL-Scan<sup>&#9415;, Autokeratometer and Pentacam<sup>&#9415; and corneal refractive power was compared among devices. <b>Results:</b> When comparing measurements with AL-Scan<sup>&#9415;, Autokeratometer and Pentacam<sup>&#9415;, the mean corneal refractive power was 43.37 ± 1.32 D (2.4 mm zone), 43.35 ± 1.32 D (3.3 mm zone), 43.36 ± 1.35 D, and 43.35 ± 1.36 D respectively and showed no significant differences. Corneal refractive power had strongly positive linear correlation (<em>p </em>&lt; 0.001) and Bland-Altman plots showed high degree of agreement among AL-Scan<sup>&#9415;, Autokeratometer and Pentacam<sup>&#9415; devices. <b>Conclusions:</b> Because measuring ocular biometry with AL-Scan<sup>&#9415; including axial length, intraocular lens power calculation and topography simultaneously is possible, clinical use is convenient. Corneal refractive power was not different when compared with autokeratometer and Pentacam<sup>&#9415;, thus, AL-Scan<sup>&#9415; can be used in the clinical environment. J Korean Ophthalmol Soc 2014;55(7):984-990