Elevated IOP Alters the Material Properties of Sclera and Lamina Cribrosa in Monkeys

Table 4

Instantaneous modulus and equilibrium modulus of stress relaxation of ppSCl in circumferential direction (MPa, Inst: instantaneous modulus; Equl: equilibrium modulus).

Groups	Modulus of scleral stress relaxation (MPa)
	Superior	Inferior	Nasal	Temporal
Exp. (Inst.)						8.80	0.031
Ctrl. (Inst.)						8.55	0.033
	0.019	0.012	0.005	0.013
Exp. (Equl.)						64.90	0.001
Ctrl. (Equl.)						13.33	0.015
	0.040	0.006	0.003	0.009

Modulus of scleral stress relaxation of each scleral trip was measured for 3 times repeatedly. Paired-samples test was applied in the intergroup comparison in each quadrant; ANOVA method and post hoc test (LSD, Tukey HSD) were applied in the intragroup comparison in each group. The instantaneous relaxation modulus and equilibrium relaxation modulus of each quadrant were higher in the experimental group than that in the control group, with significant difference (). The instantaneous relaxation modulus and equilibrium relaxation modulus of each group were significantly different in each quadrant, respectively ().