Anterior corneal curvatures
ANTERIOR, IOL
Anterior curvatures, along with axial length, are the key factors in calculating IOL power. A difference of more than 1 D in anterior corneal curvature is considered as clinically significant. The repeatability and reproducibility were excellent (SDs < 0.3 D). However, the CASIA SS-1000 had a better reproducibility in measuring flat axis (ratio = 0.58). The average difference in AKf and AKs between the two devices was 0.01 D and − 0.02 D, respectively. LOA limits are within 1 D. Thus, the two instruments are substantially equivalent, however, the CASIA SS-1000 had more consistent results.