Correlation between RNFL thickness and ONH parameters
| RNFL thickness | Optic disc area | Cup area | Rim area | Vertical C:D ratio | Horizontal C:D ratio | Vertical diameter | Horizontal diameter |
|---|---|---|---|---|---|---|---|
| RNFL, retinal nerve fibre layer; ONH, optic nerve head. | |||||||
| C:D ratio, cup:disc ratio. | |||||||
| 360° average | R = 0.4985 | R = 0.0951 | R = 0.4024 | R = 0.0879 | R = 0.0610 | R = 0.4454 | R = 0.4301 |
| p = 0.0001 | p = NS | p = 0.0026 | p = NS | p = NS | p = 0.0007 | p = 0.0012 | |
| Temporal quadrant | R = 0.2026 | R = −0.1263 | R = 0.2952 | R = −0.1537 | R = −0.2067 | R = 0.1838 | R = 0.1599 |
| p = NS | p = NS | p = 0.0302 | p = NS | p = NS | p = NS | p = NS | |
| Superior quadrant | R = 0.3822 | R = −0.003 | R = 0.3474 | R = 0.0677 | R = 0.0395 | R = 0.3774 | R = 0.2971 |
| p = 0.0043 | p = NS | p = 0.0101 | p = NS | p = NS | p = 0.0049 | p = 0.0291 | |
| Nasal quadrant | R = 0.3024 | R = 0.1552 | R = 0.1274 | R = 0.1485 | R = 0.1505 | R = 0.1490 | R = 0.2752 |
| p = 0.026 | p = NS | p = NS | p = NS | p = NS | p = NS | p = 0.044 | |
| Inferior quadrant | R = 0.4048 | R = 0.1160 | R = 0.3199 | R = 0.0424 | R = 0.0301 | R = 0.2793 | R = 0.3970 |
| p = 0.0024 | p = NS | p = 0.0184 | p = NS | p = NS | p = 0.0408 | p = 0.0030 | |