AIM: To observe the corneal refractive state stability time and changes of corneal refraction after excision of pterygium.

METHODS:There were 46 cases(54 eyes), who had undergone excision of pterygium, randomly selected for corneal topography examination operated on the 3^rd, 7^th, 14^th, 30^th and 90^th day after surgery. And statistic analysis was undertaken.

RESULTS:Astigmatism after pterygium excision decreased significantly. Ks value, astigmatism in the 3^rd postoperative day compared with that in other observation phases showed differences of statistical significance(P<0.05). Ks value, Kf value, and astigmatism in the 7^th days compared with that in other observation phases showed differences of no statistical significance(P>0.05).

CONCLUSION: Corneal refractive status is stable in 7 days afterpterygium excision surgery.