Relationship between corneal biomechanical properties and structural biomarkers in patients with normal-tension glaucoma: a retrospective study

Table 2 Pearson correlation coefficients for ophthalmic variables and ONH parameters in NTG patients

	Linear cup-to-disc ratio		Rim area		Rim volume		Mean RNFL thickness
	r	P value	r	P value	r	P value	r	P value
Age	0.187^a	0.070	−0.061^a	0.556	−0.324^a	0.001	−0.476^a	<0.001
Axial length	−0.105	0.310	0.068	0.512	0.161	0.118	0.240	0.019
Disc area	0.615^a	<0.001	0.072^a	0.490	−0.170^a	0.099	−0.450^a	<0.001
SE	0.178^a	0.084	−0.033^a	0.751	−0.265^a	0.009	−0.361^a	<0.001
CCT	−0.239	0.019	0.256	0.012	0.190	0.066	0.159	0.123
CH	−0.254	0.013	0.347	0.001	0.274	0.007	0.199	0.053
CRF	−0.119	0.250	0.227	0.027	0.174	0.092	0.149	0.150
GAT	0.042	0.683	−0.053	0.608	−0.013	0.897	0.067	0.521

^aSpearman’s rho
CCT Central corneal thickness, CH Corneal hysteresis, CRF Corneal resistance factor, GAT Goldmann applanation tonometry, HRT Heidelberg retina tomograph, NTG Normal tension glaucoma, ONH Optic nerve head, RNFL Retinal nerve fibre layer, SE Spherical equivalent

ISSN: 1471-2415