Table 2.
Interobserver reproducibility outcomes for biometric measurements obtained using AL-Scan partial coherence interferometry in children.
| Parameter | Mean difference ± SD | Sw | TRT | CoV (%) | ICC |
|---|---|---|---|---|---|
| AL (mm) | 0.01 ± 0.03 | 0.02 | 0.06 | 0.09 | 1.000 |
| CCT (μm) | −0.02 ± 1.51 | 1.06 | 2.93 | 0.19 | 0.999 |
| ACD (mm) | 0.00 ± 0.01 | 0.01 | 0.02 | 0.22 | 0.998 |
| Kf (D) | −0.02 ± 0.09 | 0.08 | 0.21 | 0.17 | 0.998 |
| Ks (D) | −0.02 ± 0.11 | 0.06 | 0.18 | 0.15 | 0.998 |
| Km (D) | −0.02 ± 0.08 | 0.06 | 0.16 | 0.13 | 0.998 |
| Astigmatism | 0.01 ± 0.12 | 0.09 | 0.24 | 6.68 | 0.989 |
| J0 (D) | 0.00 ± 0.06 | 0.04 | 0.11 | 0.990 | |
| J45 (D) | 0.00 ± 0.05 | 0.03 | 0.09 | 0.976 | |
| CD (mm) | 0.03 ± 0.10 | 0.07 | 0.21 | 0.62 | 0.955 |
| PD | −0.01 ± 0.11 | 0.08 | 0.22 | 1.01 | 0.981 |
AL = axial length, CCT = central corneal thickness, ACD = anterior chamber depth, Kf = flattest keratometry, Ks = steepest keratometry, Km = mean keratometry, CD = corneal diameter, SD = standard deviation, Sw = within-subject standard deviation, TRT = test-retest repeatability (2.77 Sw), CoV = within-subject coefficient of variation, ICC = intraclass correlation coefficient.