Table 2.
Measures of symmetry between right and left in 53 pair of eyes assessed with Cirrus OCT
| Right eye | Left eye | Correlation RE-LE | Interocular difference RE-LE | ||
|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean difference | 95% limits of agreement | ||
| Average RFNL thickness (μm) | 98.7 (8.4) | 98.8 (8.9) | 0.881** | − 0.126 | −8.402–8.150 |
| Inferior | 130.1 (15.3) | 129.7 (13.6) | 0.706** | 0.519 | − 21.45–22.49 |
| Superior | 120.1 (14.1) | 125.3 (14.7) | 0.584** | − 5.226 | −31.05–20.6 |
| Nasal | 75.8 (11.5) | 72.9 (11.2) | 0.734** | 2.909 | −13.39–19.21 |
| Temporal | 68.8 (8.7) | 66.5 (7.6) | 0.684** | 2.230 | −11.36–15.82 |
| Disc area (mm2) | 1.85 (0.39) | 1.90 (0.32) | 0.780** | − 0.044 | −0.529–0.441 |
| Rim area (mm2) | 1.49 (0.26) | 1.52 (0.26) | 0.810** | − 0.035 | −0.344–0.274 |
| Average C/D ratio | 0.39 (0.16) | 0.41 (0.14) | 0.989** | − 0.014 | −0.210–0.181 |
| Vertical C/D ratio | 0.38 (0.16) | 0.40 (0.13) | 0.713** | − 0.022 | −0.242–0.197 |
| Cup volume (mm3) | 0.10 (0.10) | 0.09 (0.08) | 0.832** | 0.005 | −0.106–0.117 |
**p < 0.01 RE right eye, LE left eye, SD standard deviation