ElShazly M, et al. - Researchers conducted this prospective study to assess the impact of weight loss, 3 months after bariatric surgery, on the macular thickness and macular vascular density by optical coherence tomography angiography (OCTA). This study included 40 eyes from 40 obese patients (19 males and 21 females) undergoing bariatric surgery. Before and 3 months after bariatric surgery, BMI, macular thickness (whole, fovea, parafovea and perifovea), macular vascular density in superficial capillary plexus (whole, fovea, parafovea and perifovea), and macular vascular density in deep capillary plexus (whole, fovea, parafovea and perifovea) were measured. Bariatric surgery had a significant effect on certain macular thickness and macular vascular density indices, particularly in the deep capillary plexus. As a result, OCTA is regarded as a valuable tool for assessing the short-term changes in macular microcirculation following significant weight loss.