Minimally Invasive Repetitive UVA Irradiation along with Riboflavin Treatment Increased the Strength of Sclera Collagen Cross-Linking

Table 1

Biomechanical parameters (, ).

Group	Group I	Group II	Group III	Group IV
Ultimate stress σ (MPa)	3.52 ± 1.38	6.34 ± 1.67	7.32 ± 1.83	9.93 ± 2.17
8% Young’s modulus E (MPa)	13.36 ± 3.84	27.54 ± 6.34	34.67 ± 7.24	41.21 ± 9.23

Note: compared to group I, the ultimate stress and 8% Young’s modulus of groups II–IV were significantly different. (one-way ANOVA, LSD t-test).