Objective To quantify thickness,vessel density(VD)and foveal avascular zone(FAZ)changes after phacoemulsification without complications by optical coherence tomography angiography.Methods This retrospective study included 16 eyes of 14 patients undergoing cataract surgery.Besides,optical coherence tomography angiography,retinal thickness,and FAZ were performed on a 4.5 mm×4.5 mm region centered on the macular before surgery,1 week,1 month and 3 months after surgery.Thickness and FAZ were calculated.The regional analysis was used to calculate the VDs changes.Results 16 eyes of 14 patients scheduled for cataract surgery and fulfilled all inclusion and exclusion criteria were consecutively enrolled.There were no significant differences in retinal thickness and FAZ in preoperative and postoperative.At the superficial vascular complex(SVC),the mean VDs outside the 2 mm range at 1 week,1 month,and 3 months after surgery were higher than that before the surgery.At deep vascular complex(DVC),the mean VD outside the 2 mm range at 3 months after the surgery was higher than that before the surgery(P<0.05).Conclusion The change of VD in the inner layer of the retina was more significant than that in the outer layer.According to the results of zonal analysis,the VD's changes in the outer regions were more pronounced than those in the areas closer to the fovea.The VD at all layers of the retina increased one week postoperatively and presented a slight decrease one month after the operation,exceeding the baseline level by 3 months.
NETL
NSTL
万方数据
