Reliability of a New Swept-Source Optical Coherence Tomography Biometer in Healthy Children, Adults, and Cataract Patients
Table 2
Intraobserver repeatability outcomes for biometric measurements obtained using IOLMaster 700 swept-source optical coherence tomography in normal subjects.
Parameter
Observer
Mean ± SD
Sw
TRT
CoV (%)
ICC (95% CI)
AL (mm)
1st
25.1 ± 1.85
0.01
0.02
0.02
1.000 (1.000 to 1.000)
2nd
25.1 ± 1.85
0.01
0.02
0.03
1.000 (1.000 to 1.000)
CCT (μm)
1st
542.84 ± 31.96
2.21
6.11
0.41
0.995 (0.993 to 0.997)
2nd
542.54 ± 32.13
2.20
6.10
0.41
0.995 (0.993 to 0.997)
ACD (mm)
1st
3.56 ± 0.27
0.01
0.04
0.40
0.997 (0.996 to 0.998)
2nd
3.56 ± 0.28
0.02
0.04
0.43
0.997 (0.996 to 0.998)
LT (mm)
1st
3.75 ± 0.27
0.02
0.04
0.41
0.997 (0.996 to 0.998)
2nd
3.75 ± 0.27
0.02
0.05
0.45
0.996 (0.995 to 0.997)
Km (D)
1st
43.72 ± 1.36
0.10
0.28
0.23
0.994 (0.992 to 0.996)
2nd
43.73 ± 1.35
0.09
0.25
0.21
0.996 (0.994 to 0.997)
WTW (mm)
1st
12.04 ± 0.35
0.09
0.24
0.72
0.940 (0.917 to 0.958)
2nd
12.04 ± 0.37
0.09
0.25
0.74
0.943 (0.920 to 0.960)
AL = axial length, CCT = central corneal thickness, ACD = anterior chamber depth, LT = lens thickness, K = keratometry, WTW = white to white, SD = standard deviation, Sw = within-subject standard deviation, TRT = test-retest repeatability (2.77 Sw), CoV = within-subject coefficient of variation, and ICC = intraclass correlation coefficient.
