Table 1.
aVP biometric data (aVP volume, length, mCSA and ε morphometrics) summarized by segment and side.
| Metric | Segment | Left | Right | Mean left–right difference* |
|---|---|---|---|---|
| aVP volume [mm3], mean (SD) | ON | 319.02 (50.76) | 319.14 (50.96) | − 0.12 (− 2.15, 1.91) |
| iOrb | 172.48 (36.58) | 172.61 (37.15) | − 0.14 (− 1.94, 1.66) | |
| iCan | 38.82 (7.02) | 39.07 (6.59) | − 0.25 (− 0.90, 0.40) | |
| iCran | 107.73 (16.77) | 107.46 (16.75) | 0.27 (− 0.30, 0.83) | |
| OC | 94.18 (21.36) | 94.17 (21.73) | 0.01 (− 1.63, 1.65) | |
| OT | 72.55 (12.04) | 72.33 (12.26) | 0.22 (− 0.12, 0.57) | |
| Entire aVP | 485.76 (75.41) | 485.65 (74.89) | 0.11 (− 2.53, 2.76) | |
| Length [mm], mean (SD) | ON | 45.27 (2.28) | 45.03 (4.51) | 0.24 (− 1.15, 1.64) |
| iOrb | 22.40 (2.18) | 22.38 (2.64) | 0.01 (− 0.67, 0.70) | |
| iCan | 6.87 (0.66) | 7.19 (2.06) | − 0.33 (− 1.10, 0.44) | |
| iCran | 16.01 (1.85) | 15.45 (1.80) | 0.56 (0.26, 0.86) | |
| OC | 6.53 (0.82) | 6.53 (0.82) | 0.00 (− 0.16, 0.17) | |
| OT | 9.57 (1.06) | 9.46 (0.97) | 0.11 (− 0.07, 0.29) | |
| Entire aVP | 61.37 (2.73) | 61.02 (4.90) | 0.36 (− 0.97, 1.68) | |
| mCSA [mm2], mean (SD) | ON | 7.04 (1.04) | 7.11 (1.13) | − 0.07 (− 0.24, 0.10) |
| iOrb | 7.65 (1.14) | 7.70 (1.34) | − 0.05 (− 0.27, 0.17) | |
| iCan | 5.66 (0.81) | 5.59 (1.02) | 0.06 (− 0.21, 0.33) | |
| iCran | 6.82 (1.35) | 7.03 (1.29) | − 0.21 (− 0.33, − 0.08) | |
| OC | 14.33 (2.10) | 14.42 (2.71) | − 0.09 (− 0.57, 0.39) | |
| OT | 7.58 (0.91) | 7.64 (0.98) | − 0.06 (− 0.19, 0.07) | |
| Entire aVP | 8.41 (1.06) | 8.48 (1.16) | − 0.07 (− 0.19, 0.05) | |
| ε | ON | 0.26 (0.04) | 0.27 (0.04) | − 0.01 (− 0.02, 0.01) |
| iOrb | 0.15 (0.03) | 0.15 (0.04) | − 0.00 (− 0.02, 0.01) | |
| iCan | 0.20 (0.08) | 0.21 (0.07) | − 0.02 (− 0.05, 0.02) | |
| iCran | 0.43 (0.06) | 0.43 (0.07) | 0.00 (− 0.02, 0.03) | |
| OC | 0.57 (0.08) | 0.57 (0.08) | 0.00 (− 0.02, 0.02) | |
| OT | 0.40 (0.07) | 0.38 (0.07) | 0.01 (− 0.01, 0.03) | |
| Entire aVP | 0.35 (0.04) | 0.35 (0.04) | − 0.001 (− 0.01, 0.01) |
aVP anterior visual pathway; ε ellipticity index; iCan intracanalicular segment; iCran intracranial segment; iOrb intraorbital segment; mCSA mean cross section area; OC optic chiasm; ON optic nerve; OT optic tract; SD standard deviation.
*Positive values indicate Left > Right, and vice-versa.