الفهرس 
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Abstract
Though recent studies have not provided sufficient evidence to figure out how the microvascular system changes in the macula after cataract surgery, most of them have suggested that damages to the blood-retinal barrier are the most important cause of macular edema after surgery.
So this study aimed to assess the effect of cataract surgery on retinal microvasculature by comparing it before and after phacoemulsification surgery using optical coherence tomography angiography.
This quasi experimental study was done on 35 patients with senile cataract attending ophthalmology outpatient clinic for surgical intervention. Our study patients had mean age of (66±3.6) years old ranged from 60 to 75 years old. Males represent 51.4% of the study patients and females represented 48.6%. Patients had mean duration of disease of (2.5±0.5) years ranged from 2 to 3 years.
Regarding full macular layer, there was significant increase in foveal thickness one month and three months postoperatively, while parafovea and perifovea showed significant increase in one week, one month and three months postoperatively with statistical significant differences (p<0.001).
Regarding inner macular layer, there was significant increase in foveal, parafovea and perifovea showed significant increase in one month and three months postoperatively with statistical significant differences (p<0.001).
Regarding outer macular layer, there was increase in foveal, and perifovea showed increase in one month and three months postoperatively, while parafoveal layer showed decrease in thickness with statistical insignificant differences (p=0.262, 0.303, 0.304, respectively).
Regarding parafoveal layer, there was significant increase in thickness one week and one month postoperatively (p<0.001), while perifovea showed