Table 2.

Correlation between IOP and WS, elasticity, viscosity of optic nerve and optic nerve head as well as with age for both NTG vs. control.

Location	Parameters	NTG			Control
		r	p-value	Linear regression	r	p-value
Optic Nerve	WS-100Hz	−0.52	0.009	3.50–0.0845*IOP; R2 = 0.27	0.30	0.159
	WS-150Hz	−0.47	0.019	3.47 −0.0836*IOP; R2 = 0.23	0.38	0.063
	WS-200Hz	−0.50	0.012	3.61 −0.081*IOP; R2 = 0.25	0.24	0.268
	Elasticity	−0.59	0.002	13.2 −0.503*IOP; R2 = 0.35	0.30	0.412
	Viscosity	0.11	0.600	x	0.11	0.621
Optic Nerve Head	WS-100Hz	−0.38	0.068	x	0.26	0.213
	WS-150Hz	−0.30	0.147	x	0.32	0.125
	WS-200Hz	−0.36	0.087	x	0.38	0.068
	Elasticity	0.15	0.540	x	0.30	0.157
	Viscosity	−0.19	0.365	x	0.29	0.171