Ologen Implantation versus Conjunctival Autograft Transplantation for Treatment of Pterygium

Table 2

The postoperative recurrence rates in both groups.

Group	Corneal invasion						Recurrence (1 y)
	<1/2 preoperation		Between 1/2 and 1		Equal to preoperation
	6 m	1 y	6 m	1 y	6 m	1 y
Ologen	1(3.23)	0(0)	0(0)	1(3.23)	1(3.23)	1(3.23)	2(6.45)
Autograft	1(2.38)	1(2.38)	0(0)	1(2.38)	1(2.38)	2(4.76)	4(9.52)
value	0.626	0.524	N/A	0.626	N/A	0.431	0.157