Abnormality of nerve fibre layer circumpapillary clock hours on optical coherence tomography, by glaucoma diagnosis
| Clinician diagnosis | Number of eyes | Abnormal superior | Abnormal inferior | Abnormal either superior or inferior | ||||
|---|---|---|---|---|---|---|---|---|
| 2 hours | 1 hour | 2 hours | 1 hour | 2 hours | 1 hour | Total 2+1 hour | ||
| Definite GON, n (%) | 1271 | 143 (11) | 397 (31) | 497 (39) | 381 (30) | 555 (44) | 470 (37) | 1025 (81) |
| Probable GON, n (%) | 516 | 6 (1) | 92 (18) | 24 (5) | 115 (22) | 30 (6) | 165 (32) | 195 (38) |
| Not GON, n (%) | 589 | 3 (1) | 28 (5) | 1 (0) | 34 (6) | 4 (1) | 54 (9) | 58 (10) |
Total 2+1 hour=number of eyes with either 1 or 2 clock hours abnormal either superior or inferior. Clock hour data not available for some imaging devices.
GON, glaucomatous optic neuropathy.