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Table 2 Intra-observer repeatability of ocular biological parameters measured using the new swept-source optical coherence tomography biometer in children after wearing orthokeratology lens

From: Effect of orthokeratology on precision and agreement assessment of a new swept-source optical coherence tomography biometer

ParameterObserverMean ± SDSwRCoV (%)ICC
AL (mm)1st25.15 ± 0.990.010.030.041.000
2nd25.14 ± 0.990.010.040.061.000
CCT (μm)1st529.21 ± 31.954.0111.100.760.983
2nd529.22 ± 32.644.2711.830.810.983
ACD (mm)1st3.65 ± 0.220.020.060.640.983
2nd3.65 ± 0.230.050.131.230.962
LT (mm)1st3.49 ± 0.200.030.080.820.967
2nd3.48 ± 0.200.040.111.180.96
Km (Φ = 2.5) (D)1st40.81 ± 1.550.080.220.190.993
2nd40.80 ± 1.570.130.360.320.993
Km (Φ = 3.0) (D)1st41.17 ± 1.560.070.190.160.994
2nd41.16 ± 1.580.110.300.260.995
CD (mm)1st11.94 ± 0.390.060.170.510.974
2nd11.95 ± 0.380.080.220.660.958
  1. AL= Axial length; CCT= central corneal thickness; ACD= anterior chamber depth (corneal epithelium to lens); LT= lens thickness; Km= mean keratometry; CD= corneal diameter; SD= standard deviation; Sw= within-subject standard deviation; R= reproducibility limit (2.77 Sw); CoV= within-subject coefficient of variation; ICC= intraclass correlation coefficient