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Vitrectomy with brilliant blue G (BBG) assisted internal limiting membrane (ILM) peeling is the standard operational technique in macular hole surgeries. However, BBG dye, though considered safe and nontoxic, can also occasionally lead to macular toxicity. This study aims to describe the clinical features and characteristics of four eyes who developed macular toxicity after following surgery for macular hole repair. Retrospective review of four consecutive cases of macular toxicity after conventional BBG assisted ILM peeling. All the cases reviewed, their operative surgical notes were retrieved and analyzed. The ILM was stained twice during surgery with prolonged intraoperative surgical time. All four cases had a prolonged surgical time and the ILM was stained twice during surgery in all cases. The area of macular toxicity was corresponding to the area of ILM peeling which had been exposed to repeated staining by BBG dye. By the end of one month, all four cases had foveal thinning along with choriocapillary atrophy. The mean BCVA was 20/80 before surgery and the final mean visual acuity was &lt;20/800. This report highlights the occurrence of macular and choriocapillary atrophy due to prolonged focal endoillumination and the increased risk of toxicity with repeated dye staining.

Brilliant Blue G toxicity in macular hole surgeries: A report on combined phototoxicity and dye-induced macular damage