Corneal and Epithelial Thickness Mapping: Comparison of Enhanced Spectral-Domain- and Spectral-Domain-Optical Coherence Tomography
Table 2
Interobserver reproducibility of corneal thickness assessment with Enhanced Spectral-Domain and Spectral-Domain-Optical Coherence Tomography in normal eyes.
Mean standard deviation (μm)
Mean coefficient of variation (%)
ESD-OCT
SD-OCT
ESD-OCT
SD-OCT
Central
1.21
1.99
0.03
0.2
0.4
0.03
Minimal
1.77
1.96
0.77
0.3
0.4
0.73
2–5 mm superior
6.24
4.94
0.63
1.1
0.8
0.66
2–5 mm supero-nasal
2.24
4.58
0.001
0.4
0.8
0.0005
2–5 mm nasal
2.43
3.37
0.036
0.4
0.6
0.01
2–5 mm infero-nasal
2.11
2.66
0.19
0.4
0.5
0.11
2–5 mm inferior
2.28
3.28
0.14
0.4
0.6
0.11
2–5 mm infero-temporal
2.32
2.76
0.44
0.4
0.5
0.40
2–5 mm temporal
2.13
3.54
0.004
0.4
0.6
0.003
2–5 mm supero-temporal
2.69
4.88
0.004
0.5
0.9
0.002
5–6 mm superior
7.50
7.03
0.88
1.1
1.1
0.88
5–6 mm supero-nasal
5.11
7.97
0.22
0.8
1.3
0.11
5–6 mm nasal
3.64
6.18
0.09
0.5
1.0
0.046
5–6 mm infero-nasal
9.66
5.66
0.45
1.5
1.0
0.53
5–6 mm inferior
2.52
7.44
0.008
0.4
1.3
0.006
5–6 mm infero-temporal
3.36
6.37
0.08
0.5
1.1
0.06
5–6 mm temporal
3.71
4.67
0.32
0.6
0.8
0.19
5–6 mm supero-temporal
7.27
6.72
0.78
1.1
1.1
0.93
Each measurement was performed by 3 trained operators in 30 eyes of 30 patients. Data in bold indicate significant differences between ESD-OCT and SD-OCT.
