Table 1 Agreement of biometry metrics between IOLMaster 700 and Galilei G6 Lens Professional. P-values derived from paired t-tests, Bonferroni correction is applied manually. Mean difference and limits of agreement are calculated based on the bland-Altman analysis. D = diopter, LoA = limit of agreement, ICC = intraclass coefficient of correlation
From: Agreement between swept-source OCT and Scheimpflug biometers in ocular measurements
Variable | IOLmaster Mean ± SD | Galilei Mean ± SD | P-value | Mean difference | Lower LoA | Upper LoA | Mean Absolute difference | ICC |
|---|---|---|---|---|---|---|---|---|
Anterior flat K (K1, D) | 43.46 ± 1.65 | 43.39 ± 1.64 | p > 0.05 | 0.06 | -0.96 | 1.09 | 0.26 | 0.974 |
Anterior steep K (K2, D) | 44.31 ± 1.63 | 44.23 ± 1.63 | p > 0.05 | 0.08 | -0.84 | 1.00 | 0.28 | 0.978 |
Anterior mean K (Km, D) | 43.92 ± 1.55 | 43.85 ± 1.55 | p > 0.05 | 0.07 | -0.83 | 0.98 | 0.24 | 0.977 |
Anterior J0 (D) | -0.11 ± 0.43 | -0.15 ± 0.40 | p > 0.05 | 0.03 | -0.32 | 0.40 | 0.13 | 0.947 |
Anterior J45 (D) | 0.02 ± 0.24 | 0.00 ± 0.20 | p > 0.05 | 0.02 | -0.33 | 0.38 | 0.11 | 0.802 |
Posterior flat K (K1, D) | -5.71 ± 0.19 | -6.11 ± 0.30 | p < 0.001 | 0.39 | 0.00 | 0.78 | 0.41 | 0.472 |
Posterior steep K (K2, D) | -6.01 ± 0.26 | -6.43 ± 0.44 | p < 0.001 | 0.42 | -0.20 | 1.04 | 0.42 | 0.548 |
Posterior mean K (Km, D) | -5.86 ± 0.21 | -6.27 ± 0.36 | p < 0.001 | 0.41 | -0.05 | 0.87 | 0.41 | 0.520 |
Posterior J0 (D) | 0.13 ± 0.06 | 0.08 ± 0.14 | p = 0.04 | 0.05 | -0.22 | 0.32 | 0.07 | 0.349 |
Posterior J45 (D) | 0.01 ± 0.08 | 0.00 ± 0.11 | p > 0.05 | 0.01 | -0.17 | 0.21 | 0.06 | 0.652 |
Total flat K (K1, D) | 43.83 ± 1.48 | 42.87 ± 1.41 | p < 0.001 | 0.95 | -0.01 | 1.92 | 0.95 | 0.872 |
Total steep K (K2, D) | 44.65 ± 1.47 | 43.73 ± 1.43 | p < 0.001 | 0.91 | 0.14 | 1.68 | 0.91 | 0.891 |
Total mean K (Km, D) | 44.24 ± 1.44 | 43.30 ± 1.39 | p < 0.001 | 0.93 | 0.18 | 1.69 | 0.93 | 0.884 |
Total J0 (D) | 0.05 ± 0.43 | -0.08 ± 0.45 | p < 0.001 | 0.13 | -0.28 | 0.56 | 0.19 | 0.914 |
Total J45 (D) | 0.04 ± 0.23 | 0.00 ± 0.23 | p > 0.05 | 0.04 | -0.37 | 0.46 | 0.14 | 0.739 |
Lens Thickness (mm) | 4.239 ± 0.615 | 4.196 ± 0.497 | p > 0.05 | 0.042 | -0.844 | 0.929 | 0.222 | 0.804 |
CCT (mm) | 0.533 ± 0.034 | 0.534 ± 0.030 | p > 0.05 | -0.001 | -0.025 | 0.024 | 0.008 | 0.960 |
ACD (mm) | 3.384 ± 0.567 | 3.540 ± 0.560 | p < 0.001 | -0.155 | -0.524 | 0.213 | 0.166 | 0.953 |
WTW (mm) | 12.081 ± 0.425 | 12.084 ± 0.409 | p > 0.05 | -0.002 | -0.490 | 0.484 | 0.149 | 0.903 |
Axial Length (mm) | 24.016 ± 1.639 | 24.044 ± 1.67 | p > 0.05 | -0.027 | -0.339 | 0.283 | 0.077 | 0.998 |