Table 2. Changes of IOP before and after the consumption of different extracts.

Parameters	Green tea group		EGCG group		Control group
	Left eye	Right eye	Left eye	Right eye	Left eye	Right eye
Basal IOP	18.59±3.45	18.77±3.29	19.06±4.59	19.53±4.598	16.22±3.898	16.78±4.71
After 30min	18±4.11	17.88±3.69	18.24±3.72	18.35±3.79	17.44±2.88	16.67±4.39
After 1h	18.29±3.58	16.88±4.12	16.65±3.16	17.59±4.65	16.22±3.598	16.33±3.43
After 1.5h	17.29±3.51	16.41±3.43	17.12±3.94	17.71±3.74	17±4.39	16.56±4.64
After 2h	16.41±3.28	16.18±3.05	17.29±3.65	17.76±3.85	17±3.42	16.89±4.57
Decrease of IOP
Δ after 30min, P	0.59±2.59, 0.289	0.88±1.96, 0.083	0.82±3.43, 0.337	1.18±1.98, 0.026	-1.22±3.23, 0.289	0.11±3.95, 0.935
Δ after 1h, P	0.29±2.59, 0.646	1.88±2.03, 0.001	2.41±2.98, 0.004	1.94±1.98, 0.001	0.0±2.0, 1.0	0.44±2.79, 0.645
Δ after 1.5h, P	1.29±2.28, 0.033	2.35±1.69, 0.000	1.94±2.99. 0,017	1.82±1.91, 0.001	-0.78±3.83, 0.560	0.22±3.73, 0.863
Δ after 2h, P	2.18±3.19, 0.012	2.59±1.97, 0.000	1.76±3.09, 0.032	1.76±2.46, 0.009	-0.78±2.64, 0.402	-0.11±4.28, 0.940

IOP: Intraocular pressure; EGCG: Epigallocatechin gallate; Δ: Difference.

mean±SD, mm Hg, n=43