Table 2
Correlation coefficients, R, p values, and equations of linear regression lines for the correlation between neuroretinal rim area measurements and other variables
| Variable | Planimetry of disc photographs | HRT measurements | |
|---|---|---|---|
| Mean visual field defect | R = −0.58; p <0.0001 | R = −0.51; p <0.0001 | |
| Y = −0.06 X + 1.49 | Y = −0.06 X + 1.62 | ||
| Square root of the mean visual defect | R = −0.64; p <0.0001 | R = −0.52; p <0.0001 | |
| Y = −0.24 X + 1.58 | Y = −0.21 X + 1.68 | ||
| Visibility of the retinal nerve fibre layer | R = 0.32; p <0.0001 | R = 0.19; p = 0.01 | |
| Y = 0.02 X + 1.13 | Y = 0.01 X + 1.35 | ||
| “Neuroretinal rim area defect” correlated with mean visual field defect | R = 0.58; p <0.0001 | R = 0.52; p <0.0001 | |
| Y = 0.06 X + 0.09 | Y = 0.06 X − 0.01 | ||
| “Neuroretinal rim area defect” correlated with the square root of the mean visual field defect | R = 0.64; p <0.0001 | R = 0.52; p <0.0001 | |
| Y = 0.24 X + 0.00 | Y = 0.20 X − 0.08 | ||
| Rim area/disc area correlated with mean visual field defect | R = −0.52; p <0.0001 | R = −0.46; p <0.0001 | |
| Y = −0.02 X + 0.56 | Y = −0.02 X + 0.66 | ||
| Rim area/disc area correlated with the square root of the mean visual field defect | R = −0.56; p <0.0001 | R = −0.46; p <0.0001 | |
| Y = −0.09 X + 0.59 | Y = −0.08 X + 0.69 | ||
