Research Article

Precision of Corneal Thickness Measurements Obtained Using the Scheimpflug-Placido Imaging and Agreement with Ultrasound Pachymetry

Table 2

Interoperator reproducibility of central corneal thickness (CCT) and the thinnest corneal thickness (TCT) readings by the Scheimpflug-Placido topographic modeling system (TMS-5).

ParametersSw (μm)2.77 Sw (μm)CoV (%)ICC (95% CI)

CCT4.09 11.32 0.78 0.981 (0.971 to 0.988)
TCT4.0111.11 0.77 0.982 (0.972 to 0.989)

Sw: within-subject standard deviation; CoV: coefficient of variation; ICC: intraclass correlation coefficient; CI: confidence interval.