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| PF group (n = 40) | Control(n = 32) | P value | |
| Superior/inferior defects | 29∶5 | 20∶12 | 0.06 |
| Mean threshold in involved quadrant (dB) | 17.2±2.4 | 25.4±4.1 | 0.04 |
| No of points <1% | 11±7.3 | −10±6.8 | 0.3 |
| Foveal threshold (dB) | 24±4.2 | 31±2.1 | 0.06 |
| Visual field index (%) | 71±20.9 | 85±14.6 | |
| Lowest defect depth (dB) | −31±5.2 | −16±6.2 | 0.008 |
