Evaluation of Pachymetric Measurements with Scheimpflug Photography-Based System and Optical Coherence Tomography Pachymetry at Different Stages of Keratoconus

Figure 1

Bland-Altman plot of the differences in TCT (a), CCT (b), CT 3 mm (c), CT 5 mm (d), and CT 8 mm (e) between the Sirius system and the Visante OCT system plotted against the mean value of both. The upper and the lower lines represent the LoA, calculated as mean ± 1.96 SD.

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