Abstract AIM: To discuss the relation of the change of intraocular tension and corneal thickness after LASIK. METHODS:Intraocular tension and corneal thickness of the 104 cases (201 eyes) preLASIK and postLASIK were examined, the linear correlation of the change of intraocular tension and corneal thickness was turned out,and regression equation was calculated. Statistical significance of regression equation was detected with F，t analysis. RESULTS: The coefficient correlation of the change of intraocular tension and corneal thickness was R=0.469，R 2=0.220，regression equation was Y=3.503+0.043X，F=8448，t=2.906，P=0.007. CONCLUSION:The change of intraocular tension and corneal thickness has linear correlation.When corneal thickness changes ,the value of intraocular tension changes correspondingly.