Table 2.
Comparison of locational correlation with retinal nerve fiber layer defect between β zone and γ-zone parapapillary atrophy group.
| β-zone group (49 eyes) | γ-zone group (40 eyes) | P value | |
|---|---|---|---|
| Angular extent of RNFL defect (°) | 29.88 ± 11.65 | 30.14 ± 12.44 | 0.920∗ |
| Location of RNFL defect, n (%) | 0.071† | ||
| Superior | 12 (24.5) | 17 (42.5) | |
| Inferior | 37 (75.5) | 23 (57.5) | |
| Angular location of RNFL defect (°) | −24.77 ± 52.26 | −7.37 ± 64.38 | 0.172∗ |
| Angular location of PMRE (°) | −15.86 ± 38.38 | −4.44 ± 10.06 | 0.050∗ |
| Width of PPA on PMRE (μm) | 412.02 ± 125.85 | 603.83 ± 257.81 | <0.001 ∗ |
| The angular distance between the RNFL defect and PMRE (°) | 26.49 ± 17.27 | 60.31 ± 17.12 | <0.001 ∗ |
RNFL = retinal nerve fiber layer, PMRE = point of maximum radial extent on the parapapillary atrophy margin, PPA = parapapillary atrophy. Data are presented as mean ± standard deviation. ∗Comparison performed using independent t-test. †Comparison performed using chi-square test.