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Characteristics of glaucomatous field defects
| (1) Asymmetrical across the horizontal midline (in early/moderate cases) |
| (2) Located in the mid-periphery (in early/moderate cases) |
| (3) Clustered in neighbouring test points |
| (4) Reproducible on at least two occasions |
| (5) Not explained by any other disease |
| (6) Considered a valid representation of the subjects functional status (based on performance indices such as false positive rate) |
