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Descriptive measures of our study sample (N=1,921 fields) using three global indices: mean defect (MD), pattern standard deviation (PSD) and visual field index (VFI).
| N=1,921 | Average | Std Dev | Median | Range |
|---|---|---|---|---|
| Mean defect (MD in dB) | −2.1 | 3.9 | −1.1 | −30.8 – 2.8 |
| Pattern standard deviation (PSD in dB) | 2.8 | 2.5 | 1.8 | 0.9 – 17.0 |
| Visual field index (VFI in %) | 95.2 | 10.7 | 99.0 | 3.0 – 100.0 |
| Age (years) | 51.4 | 15.3 | 50.7 | 18.3 – 90.5 |
