Repeatability of Ocular Measurements with a Dual-Scheimpflug Analyzer in Healthy Eyes
Table 1
Mean pachymetric, white-to-white and anterior chamber values and standard deviations, ANOVA test, repeatability, intraclass coefficients, and coefficients of variation in healthy eyes.
Anatomical parameters
Mean1 ± SD
Mean2 ± SD
Mean3 ± SD
ANOVA
Mean ± Sw
ICC (lower 95% CI)
COV (%)
Thinnest CCT (m)
548.96 ± 51.66
552.07 ± 37.37
547.85 ± 58.22
0.460
551.36 ± 45.51
126.06
0.78 (0.66)
8.25
Corneal thickness average in (m)
568.53 ± 26.80
569.29 ± 26.68
568.88 ± 26.91
0.066
568.91 ± 26.76
74.13
1.00 (0.99)
4.71
Corneal thickness average mid (m)
616.02 ± 26.35
616.68 ± 26.97
616.19 ± 26.93
0.779
616.29 ± 26.44
73.23
0.99 (0.98)
4.29
Corneal thickness average out (m)
700.12 ± 36.59
696.25 ± 43.09
698.95 ± 32.43
0.728
698.44 ± 31.41
87.00
0.79 (0.66)
4.50
Corneal volume (mm3)
34.32 ± 1.47
34.33 ± 1.51
34.32 ± 1.48
0.995
34.32 ± 1.46
4.03
0.98 (0.97)
4.24
Limbo nasal-temporal (mm)
12.43 ± 0.52
12.35 ± 0.50
12.40 ± 0.43
0.387
12.38 ± 0.47
1.29
0.94 (0.88)
3.78
Limbo superior-inferior (mm)
12.10 ± 0.52
12.01 ± 0.52
12.00 ± 0.57
0.283
12.04 ± 0.50
1.38
0.84 (0.71)
4.14
ACD (mm)
3.30 ± 0.27
3.28 ± 0.27
3.29 ± 0.27
0.192
3.29 ± 0.27
0.74
1.00 (0.99)
8.12
Anterior chamber volume (mm3)
113.83 ± 20.95
118.84 ± 20.58
117.68 ± 27.88
0.054
117.67 ± 18.88
52.30
0.93 (0.88)
16.05
Temporal Iridocorneal angle (degrees)
37.62 ± 2.87
37.50 ± 2.88
37.67 ± 2.97
0.349
37.60 ± 2.85
7.89
0.99 (0.98)
7.58
Superior Iridocorneal angle (degrees)
37.07 ± 4.01
36.58 ± 3.83
36.51 ± 4.12
0.127
36.72 ± 3.78
10.46
0.95 (0.92)
10.29
Nasal Iridocorneal angle (degrees)
37.23 ± 3.18
37.34 ± 3.17
37.22 ± 3.19
0.300
37.29 ± 3.13
8.66
0.99 (0.98)
8.38
Inferior Iridocorneal angle (degrees)
38.80 ± 3.70
38.41 ± 3.60
38.45 ± 3.74
0.104
38.55 ± 3.58
9.93
0.97 (0.96)
9.30
CCT: central corneal thickness; ACD: anterior chamber deep from the corneal endothelium; SD: standard deviation; Sw: within-subject SD; : ANOVA-test (values of were considered to be indicative of significant differences); : repeatability limits; ICC: intraclass coefficient; COV: coefficient of variation.
