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 | p | ESD-OCT | SD-OCT | p | |
| 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.