In this research study investigators want to learn more about treatment of advanced or recurrent retinoblastoma. For children with retinoblastoma that have an advanced stage of presentation in one eye or if they have failed all conventional treatment, eye removal is considered. This study will investigate the utility of a chemoplaque(s) to salvage eyes involved with retinoblastoma. The goal of the study is to further determine/assess the safety and efficacy and optimal chemotherapy dose for retinoblastoma.
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To determine the safety and tolerability of Episcleral Topotecan in participants with retinoblastoma by measuring the rate and severity of treatment related adverse events in study participants as assessed by CTCAE version 5.0 criteria.
Timeframe: 12 weeks and follow up