Table 2.
Interocular symmetry of macular fibre complex OCT measurements in healthy children (n = 124)
| Right eye Mean (SD) (μm) | Left eye Mean (SD) (μm) | Interocular difference (right eye – left eye), (μm) | Absolute interocular difference, (μm) | ICC (95% CI) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean (95% CI) | p value | p2.5 | p5 | p25 | p50 | p75 | p95 | p97.5 | p90 | p95 | ||||
| mRNFLa, Superior | 34.56 (3.78) | 34.31 (3.49) | 0.26 (− 0.12 to 0.64) | 0.182 | − 3.5 | −2.5 | −1.0 | 0.5 | 1.5 | 3.5 | 4.0 | 3.0 | 3.5 | 0.83 (0.76 to 0.87) |
| mRNFL, Inferior | 37.11 (4.22) | 37.61 (4.48) | −0.50 (− 0.88 to 0.13) | 0.008 | −5.0 | −4.0 | −1.5 | − 0.25 | 0.5 | 3.0 | 3.5 | 3.5 | 4.5 | 0.88 (0.83 to 0.91) |
| mRNFL, Total | 35.83 (3.78) | 36.00 (3.80) | −0.17 (− 0.47 to 0.14) | 0.282 | −3.0 | −2.5 | −1.0 | 0 | 0.5 | 2.0 | 3.0 | 2.5 | 3.0 | 0.90 (0.86 to 0.93) |
| GCL-IPLb, Superior | 73.56 (5.29) | 74.17 (4.74) | −0.60 (−1.06 to 0.15) | 0.010 | −3.0 | −3.0 | −1.5 | −0.5 | 0.5 | 1.5 | 2.0 | 2.5 | 3.0 | 0.86 (0.81 to 0.90) |
| GCL-IPL, Inferior | 73.22 (4.73) | 73.17 (4.64) | 0.05 (−0.21 to 0.31) | 0.693 | −2.5 | −2.0 | −0.5 | 0 | 1.0 | 2.0 | 3.0 | 2.0 | 2.5 | 0.95 (0.93 to 0.97) |
| GCL-IPL, Total | 73.38 (4.90) | 73.65 (4.63) | −0.09 (−0.03 to 0.20) | 0.111 | −2.5 | −2.0 | −1.0 | 0 | 0.5 | 1.5 | 2.0 | 2.0 | 2.5 | 0,99 (0.99 to 0.99) |
ICC Intraclass correlation coefficient, CI Confidence interval, SD Standard deviation, p Percentile.
Note. amRNFL Macular retinal nerve fibre layer thickness, bGCL-IPL Macular ganglion cell layer-inner plexiform layer thickness