Table 1.

Comparison of changes of corneal endothelial cells [$\overline{x}\pm s$].

Group	N	Corneal endothelial cell density (%)		Proportion of hexagonal cells		Coefficient of variation of corneal endothelial cells (unit/mm2)
		Before treatment	After treatment	Before treatment	After treatment	Before treatment	After treatment
Control group	30	2005.38 ± 246.49	2235.91 ± 243.67	29.49 ± 6.45	34.94 ± 6.55	36.49 ± 7.34	34.29 ± 3.42
Research group	30	2006.49 ± 243.55	2634.92 ± 232.56	29.39 ± 6.77	43.29 ± 7.45	36.43 ± 7.53	29.19 ± 3.35
t		0.017	6.488	0.058	4.684	0.031	5.834
P		>0.05	<0.01	>0.05	<0.01	>0.05	<0.01