Abstract:AIM:To explore the relationship of intraocular pressure (IOP), central corneal thickness(CCT),refraction dioptres and corneal curvature before LASIK.METHODS: Totally 220 cases (440 eyes) with refractive errors were enrolled and the data were measured by non-contact tonometer, ultrasound pachymetry and computer refractor. Various measurements were compared and analyzed statistically.RESULTS: There was a positive correlation between IOP and CCT in patients with refractive errors( r=0.568,0.534, 0.413, 0.412;P<0.001). There was no statistically significant correlation between refraction dioptres and CCT, IOP, corneal curvature in refractive errors(r=-0.078,0.068,-0.077; P=0.052, 0.073, 0.058). There was no statistically significant correlation between corneal curvature, IOP and CCT in refractive error(r=0.004,-0.058; P=0.917, 0.157).CONCLUSION: There is a positive correlation between IOP and CCT in patients with refractive errors.