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| Octopus field grade |
|||||||
|---|---|---|---|---|---|---|---|
| Normal | Minimal | Mild | Moderate | Marked | Blinding | Total | |
| Humphrey field grade | |||||||
| Normal | 1 | 13 | 7 | 0 | 2 | 0 | 23 |
| Minimal | 0 | 24 | 2 | 2 | 0 | 0 | 28 |
| Mild | 0 | 9 | 11 | 1 | 0 | 0 | 21 |
| Moderate | 0 | 3 | 4 | 7 | 0 | 0 | 14 |
| Marked | 0 | 0 | 3 | 3 | 5 | 1 | 12 |
| Blinding | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
| Total | 1 | 49 | 27 | 13 | 7 | 3 | 100 |
