Examinations
Before surgery, all the enrolled patients were examined by slit lamp, intraocular pressure(IOP) and corneal endothelial cell count(ECC) were measured. All patients were taken refractive examination and the best corrected vision(BCVA) was determined. Corneal curvature was determined by keratometer and AB-ultrasonography were performed to determine the axial length of the eye. SRK-T formula was used to calculate the IOL degree. Fundus photos were taken and OCT was used to examine fundus conditions .Follow-up visits were performed 1 week, 1 month, 3 months and 6 months after the operation, and all preoperative examinations were also performed to evaluate postoperative recovery and complications.