Table 3. Mean RNFL thickness of the different segments among the three age groups.
| Segment | Age < 70 (n = 92) RNFL (mean ± SD) (μm) | Age 70–79 (n = 43) RNFL (mean ± SD) (μm) | Age 80–89 (n = 8) RNFL (mean ± SD) (μm) | p-value |
|---|---|---|---|---|
| NU | 82.87 ± 10.95 | 81.28 ± 13.28 | 81.75 ± 7.13 | 0.750 |
| NL | 73.29 ± 10.02 | 75.14 ± 12.53 | 76.25 ± 9.35 | 0.545 |
| IN | 122.82 ± 19.70 | 123.37 ± 24.64 | 113.88 ± 28.28 | 0.513 |
| IT | 143.33 ± 16.84 | 140.07 ± 24.12 | 125.75 ± 18.74 | 0.046 |
| TL | 78.67 ± 12.48 | 74.79 ± 10.20 | 66.50 ± 9.64 | 0.009 |
| TU | 83.75 ± 12.60 | 84.81 ± 11.59 | 83.13 ± 11.80 | 0.875 |
| ST | 129.92 ± 16.27 | 127.44 ± 18.28 | 121.00 ± 25.46 | 0.330 |
| SN | 112.08 ± 14.03 | 104.74 ± 14.34 | 100.13 ± 13.80 | 0.004 |
| superior half | 102.18 ± 8.77 | 99.56 ± 9.87 | 96.45 ± 9.51 | 0.114 |
| inferior half | 104.60 ± 9.90 | 103.39 ± 13.16 | 95.88 ± 9.51 | 0.107 |
| Global mean (μm) | 103.62 ± 8.29 | 101.63 ± 9.51 | 96.17 ± 9.51 | 0.055 |
n: number of eyes, RNFL: retinal nerve fiber layer, SD: standard deviation, NU: nasoupper, NL: nasolower, IN: inferonasal, IT: inferotemporal, TL: temporolower, TU: temporoupper, ST: superotemporal, SN: superonasal