AIM: To measure the changes of anterior chamber morphology after laser subepithelial keratomileusis(LASEK)surgery with Sirius anterior segment analysis system.

METHODS:A total of 53 cases(106 eyes)with myopia underwent LASEK were randomly selected from Jan.2015 to Aug.2015. Applications of Sirius anterior segment analyzer measure the eyes' central anterior chamber depth, anterior chamber angle and anterior chamber volume before operation and at 1, 3, 6mo, 1y after operation.

RESULTS: Within 1 year after LASEK, central anterior chamber depth and volume compared with the preoperative decreased significantly(P<0.05). The anterior chamber angle than preoperative no change(P>0.05). Each time point within 1 year after LASEK, central anterior chamber depth, anterior chamber angle, anterior chamber volume did not change(P>0.05).

CONCLSION: The central anterior chamber depth and anterior chamber volume is decreased after LASEK, but the depth of the anterior chamber and the volume of the anterior chamber are unchanged in 1 years after the operation. The anterior chamber angle is not changed after LASEK operation. Therefore, in the follow-up period, the morphology of the anterior chamber is stable after LASEK.