Table 2.

 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
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

RNFL, retinal nerve fibre layer; ONH, optic nerve head.

C:D ratio, cup:disc ratio.