Purpose: To investigate the single-dose effect of intravitreal dexamethasone (DEX) implant for patients with post-vitrectomy macular edema (ME) under silicone oil (SO) tamponade.
Methods: Twelve eyes diagnosed with ME after undergoing pars plana vitrectomy with SO injections were retrospectively reviewed. Each eye received a single intravitreal DEX implant (0.7-mg, Ozurdex; Allergan Inc) injection as treatment for recalcitrant ME. Best-corrected visual acuity (BCVA), central macular thickness (CMT), and intraocular pressure (IOP) were recorded.
Results: Compared with baseline (1.24 ± 0.34), the mean LogMAR BCVA improved at 1 (1.14 ± 0.27), 3 (1.13 ± 0.22), and 6 (1.22 ± 0.30) months without statistical significance. Maximal CMT resolution was observed at 1 month after intravitreal injection. The CMT value improved significantly at 1 (P = .008), 3 (P = .006), and 6 (P = .009) months. IOP did not show significant elevation during follow-up. No serious adverse events were observed.
Conclusion: Single-dose treatment of DEX implant may have benefit for recalcitrant post-vitrectomy ME under SO tamponade.
Keywords: Ozurdex; Post-vitrectomy macular edema; central macular thickness; intravitreal dexamethasone implant; silicone oil.