Aim: The aim of this paper is to investigate the need of deferring cataract surgery until treating the co-existing diabetic macular edema (DME) using intravitreal (IVI) anti-vascular endothelial growth factor (anti-VEGF).
Methods: A prospective randomized interventional study included diabetic patients with visually significant cataract and DME. Patients were divided into 2 groups. Group A received three preoperative intravitreal (IVI) aflibercept injections with a monthly interval; the third injection was given intra-operatively. Group B received a single intra-operative injection, and two post-operative injections with a monthly interval. The primary outcome measure was the change in central macular thickness (CMT) at 1st and 6th month post-operative. The secondary outcome measures were best corrected visual acuity (BCVA) at same points and any documented adverse effects.
Results: Forty patients were enrolled in the study, 20 patients in each group. Means of CMT at 1 month post-operatively were significantly higher in group B than group A but no statistical difference at 6 months. There was no statistical difference between the 2 groups regarding BCVA at 1 or 6 months post-operatively. Compared with the baseline values, BCVA and CMT improved significantly after 1 and 6 months within both groups.
Conclusion: IVI of aflibercept given before cataract surgeries does not seem to have superior effect over postoperative injections in either macular thickness or visual outcomes. Hence, preoperative controlling of DME might not be mandatory in patients undergoing cataract surgery.
Clinical Trial Registration: The study is registered in clinical trial. Gov (NCT05731089).
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