Table 3.

Comparison of tissue inhibitor of metalloproteinase-1 and tissue inhibitor of metalloproteinase-2 levels in the tears of two groups of patients at different time points

Time	TIMP-1 (ng/mL)				TIMP-2 (ng/mL)
	Group A	Group B	t value	P value	Group A	Group B	t value	P value
Preoperative	5.24 ± 0.13	5.77 ± 0.10	2.34	0.032	4.28 ± 0.15	3.33 ± 0.28	6.13	0.004
1 d	5.25 ± 0.15	5.76 ± 0.12	2.06	0.028	4.22 ± 0.18	3.58 ± 0.34	6.01	0.003
3 d	5.23 ± 0.14	4.89 ± 0.11	2.83	0.027	4.19 ± 0.13	3.71 ± 0.2	5.41	0.007
1 wk	4.57 ± 0.15	4.61 ± 0.23	0.45	0.060	4.28 ± 0.13	3.44 ± 0.36	5.08	0.006
2 wk	4.20 ± 0.13	5.51 ± 0.15	2.75	0.021	4.23 ± 0.18	3.51 ± 0.31	6.51	0.002
3 wk	4.71 ± 0.18	5.50 ± 0.14	5.75	0.005	4.29 ± 0.16	3.50 ± 0.35	6.60	0.004
4 wk	4.70 ± 0.17	5.77 ± 0.13	7.34	0.003	4.19 ± 0.16	3.50 ± 0.37	6.64	0.003

TIMP: Tissue inhibitor of metalloproteinase.