Huang YT, Lin CJ, Chen HS, et al. - Researchers conducted this retrospective, interventional case series study to assess the impacts of dexamethasone intravitreal implant on treatment-naïve branch retinal vein occlusion (BRVO)-induced macular edema, and the risk factors for earlier repeated treatment. Patients who were treated between 2013 and 2016 were included in the study. Using a Cox proportional hazard model and logistic regression, risk factors for repeated treatment were identified. Participants in the study were 29 patients (mean age: 58.64 ± 13.3 years). Dexamethasone intravitreal implant improves peak CRT and best-corrected visual acuity significantly, but older age, higher initial CRT, and diabetes are risk factors for repeated injections. The best retreatment schedule for these patients should be researched further.