Table 5.
Comparisons of the optic disc parameters between moderate NTG and POAG patients (based on AGIS score)
| Optic disc parameters | Median (interquantile range)
|
Z stat | P-value* | |
|---|---|---|---|---|
| Moderate NTG (n=11) | Moderate POAG (n=16) | |||
| Disc area, mm2 | 2.65 (0.72) | 2.25 (0.44) | −2.14 | 0.032 |
| Cup area, mm2 | 1.61 (0.62) | 1.22 (0.45) | −1.99 | 0.047 |
| Rim area, mm2 | 1.03 (0.35) | 0.85 (0.50) | −0.25 | 0.804 |
| Cup volume, mm3 | 0.47 (0.26) | 0.33 (0.23) | −0.96 | 0.340 |
| Rim volume, mm3 | 0.35 (0.23) | 0.22 (0.13) | −0.86 | 0.389 |
| Cup/disc area ratio | 0.51 (0.17) | 0.53 (0.16) | −1.07 | 0.284 |
| Linear cup/disc ratio | 0.72 (0.11) | 0.73 (0.11) | −1.01 | 0.311 |
| Mean cup depth, mm | 0.35 (0.12) | 0.30 (0.10) | −0.08 | 0.939 |
| Maximum cup depth, mm | 0.77 (0.27) | 0.62 (0.17) | −0.08 | 0.939 |
| Cup shape measure | −0.04 (0.10) | −0.08 (0.05) | −0.61 | 0.540 |
| Height variation contour, mm | 0.37 (0.10) | 0.34 (0.07) | −1.19 | 0.236 |
| Mean RNFL thickness, mm | 0.19 (0.14) | 0.16 (0.09) | −1.61 | 0.108 |
| RNFL cross-sectional area, mm2 | 1.23 (0.79) | 0.84 (0.50) | −1.40 | 0.163 |
Notes:
*
Mann–Whitney test was applied. Bold text indicates that the values reached significant level.
Abbreviations: NTG, normal-tension glaucoma; POAG, primary open-angle glaucoma; RNFL, retina nerve fiber layer; AGIS, Advanced Glaucoma Intervention Study.