Abnormality of nerve fibre layer quadrant and Glaucoma Hemifield Test (GHT) by eye, by diagnosis for the most recent tests
| Definite GON | Normal OCT superior | ||
| Superior OCT abnormal AND | |||
| Matching GHT | Abnormal GHT non-match | GHT=normal or other | 676 (44%) |
| 633 (41%) | 147 (10%) | 77 (5%) | |
| Inferior OCT abnormal AND | Normal OCT inferior | ||
| Matching GHT | Abnormal GHT non-match | GHT=normal or other | 476 (31%) |
| 875 (57%) | 86 (6%) | 99 (6%) | |
| Either superior or inferior OCT abnormal | Normal OCT superior & inferior | ||
| Matching GHT | Abnormal GHT non-match | GHT=normal or other | 269 (18%) |
| 1115 (73%) | 21 (2%) | 128 (8%) | |
| Not GON | |||
| Either superior or inferior OCT abnormal | Normal OCT superior & inferior | ||
| Matching GHT | Abnormal GHT non-match | GHT=normal or other | 617 (91%) |
| 11 (2%) | 4 (1%) (7%) | 47 | |
| Probable GON | |||
| Either superior or inferior OCT abnormal | Normal OCT superior & inferior | ||
| Matching GHT | Abnormal GHT non-match | GHT=normal or other | 350 (58%) |
| 76 (13%) | 3 (0%) (29%) | 174 | |
GON, glaucomatous optic neuropathy; OCT, optical coherence tomography.
Other=any GHT finding except outside normal limits. The position of GHT abnormality was undetermined in 6 definite GON, 2 not GON and 12 probable GON eyes.