At 6 months after surgery, there was no significant difference in number of eyes with decrease, stable or increase of BCVA between the two groups ( P=0.259); Corneaepithelium of one eye in each group was healed within 14 days, and the cornea epithelia were healed within 7 days in all rest cases of the two groups, and there was no significant difference in the healing time of corneal epithelium between the two groups ( P=1.000); At 6 months after the surgery, there was no true recurrence in the two groups, and there was no significant difference between the two groups of grade 1, 2 and 3 patients with conjunctival hyperplasia ( Z=0.461, P=0.497). There were three eyes (3/25, 12.0%) and two eyes (2/30, 6.7%) had fibrovascular tissuehyperplasia in the experimental group and control group, respectively, but fibrovasular tissuehyperplasia was only appeared at the junction of conjunctiva and graft, and did not reach the center of the and graft or the limbus of cornea.