Table 2
Optic disc measurements of the parapapillary region
| Mean (SD) | SE | Range | Frequency | |
|---|---|---|---|---|
| α zone area (mm2); total | 0.74 (0.26) | 0.03 | 0.00–1.47 | 69/70 = 98.6% |
| Temporal horizontal | 0.32 (0.13) | 0.01 | 0.00–0.75 | 69/70 = 98.6% |
| Temporal inferior | 0.25 (0.11) | 0.01 | 0.00–0.56 | 69/70 = 98.6% |
| Temporal superior | 0.15 (0.08) | 0.01 | 0.00–0.42 | 68/70 = 97.1% |
| Nasal | 0.02 (0.08) | 0.01 | 0.00–0.49 | 20/70 = 28.6% |
| Width (mm), temporal horizontal | 0.29 (0.11) | 0.01 | 0.00–0.66 | |
| Temporal inferior | 0.15 (0.07) | 0.01 | 0.00–0.34 | |
| Temporal superior | 0.09 (0.04) | 0.005 | 0.00–0.23 | |
| Nasal | 0.01 (0.03) | 0.004 | 0.00–0.21 | |
| β zone; total | 0.10 (0.28) | 0.03 | 0.00–1.27 | 8/70 = 11.4% |
| Temporal horizontal | 0.04 (0.13) | 0.02 | 0.00–0.59 | 8/70 = 11.4% |
| Temporal inferior | 0.03 (0.11) | 0.01 | 0.00–0.64 | 8/70 = 11.4% |
| Temporal superior | 0.02 (0.05) | 0.01 | 0.00–0.28 | 8/70 = 11.4% |
| Nasal | 0.001 (0.01) | 0.001 | 0.00–0.05 | 1/70 = 1.4% |
| Width (mm), temporal horizontal | 0.05 (0.13) | 0.02 | 0.00–0.59 | |
| Temporal inferior | 0.02 (0.06) | 0.01 | 0.00–0.37 | |
| Temporal superior | 0.01 (0.04) | 0.006 | 0.00–0.21 | |
| Nasal | 0.001 (0.001) | 0.001 | 0.00–0.03 | |
| Arteriole diameter (mm); | ||||
| Temporal inferior | 0.106 (0.021) | 0.003 | 0.070–0.160 | |
| Temporal superior | 0.104 (0.019) | 0.002 | 0.070–0.170 | |
| Nasal superior | 0.091 (0.023) | 0.003 | 0.050–0.160 | |
| Nasal inferior | 0.092 (0.022) | 0.003 | 0.040–0.150 | |
| Venule diameter (mm); | ||||
| Temporal inferior | 0.131 (0.030) | 0.004 | 0.070–0.200 | |
| Temporal superior | 0.134 (0.030) | 0.004 | 0.070–0.210 | |
| Nasal superior | 0.109 (0.027) | 0.003 | 0.070–0.210 | |
| Nasal inferior | 0.110 (0.027) | 0.003 | 0.070–0.180 | |
| RNFL visibility (relative units); total | 28.84 (4.64) | 0.59 | 16–37 | |
| Temporal inferior | 6.29 (1.22) | 0.15 | 3–8 | |
| Temporal superior | 5.90 (1.18) | 0.15 | 3–8 | |
| Nasal superior | 3.44 (1.13) | 0.14 | 1–6 | |
| Nasal inferior | 3.27 (0.85) | 0.11 | 2–5 | |
| Temporal horizontal | 1.94 (0.60) | 0.08 | 1–3 | |
| Superior | 2.82 (0.78) | 0.01 | 1–4 | |
| Nasal | 2.08 (0.61) | 0.08 | 1–3 | |
| Inferior | 3.07 (0.81) | 0.10 | 1–4 |
