Fig. 2

Bland-Altman plots showing the mean difference versus average of the (a) central corneal thickness (CCT), (b) anterior chamber depth (ACD), (c) lens thickness (LT) and (d) axial length (AL) for the comparison of the Eyestar 900 and the Lenstar LS 900 biometers. The mean (continuous line), lower and upper limits of agreement (± 1.96 SD [standard deviation], peripheral dotted lines), and the lower and upper confidence intervals (95%) are depicted. P values are included in each comparison