AIM: To observe effects of using protein-free calf blood extract eye gel on dry eye syndrome after laser in situ keratomileusis(LASIK).

METHODS: Totally 136 patients 272 eyes treated with LASIK were divided into two groups according to using protein-free calf blood extract eye gel or not. Tear tests were performed before and after surgery and contrasted between two groups.

RESULTS: Tear tests of protein-free calf blood extract eye gel group were better than that of control group(P<0.05).

CONCLUSION: Protein-free calf blood extract eye gel can benefit the epithelium recovery from mechanical injury, and stabilize lacrimal film after LASIK.