Outcomes of postsilicone oil tamponade cystoid macular edema in eyes without posterior staphyloma following primary rhegmatogenous or recurrent retinal detachment: A retrospective case series

Purpose: Evaluate the treatment outcome of cystoid macular edema (CME) following silicone oil (SO) tamponade in primary rhegmatogenous retinal detachment (RRD) or recurrent retinal detachment (RD). Materials and Methods: This retrospective case study spans from January 2019 to February 2024. A single surgeon performed all surgeries. Of 23 eyes treated with SO tamponade for RD during this period, six eyes of six patients developed CME either during SO tamponade or persisting after SO removal. The primary outcome measure was the resolution of CME on spectral-domain optical coherence tomography. Secondary outcome measures included additional treatments administered to resolve CME and visual outcomes at the final follow-up (minimum 12 months). Results: Six eyes of six patients met the inclusion criteria. Ages ranged from 50 years to 57 years (mean: 54.66 ± 2.73 years). Three eyes underwent SO removal for RRD and three for recurrent RD with additional internal limiting membrane (ILM) peeling. CME resolved in 5/6 eyes (69.44%), while one eye exhibited persistent CME with schisis and a lamellar macular hole. Conclusion: In selected cases, ILM peeling during SO removal may enhance CME resolution.