RecruitingGenetic interventionPhase 1/2 Open-Label Dose-Escalation Study to Evaluate Safety of a Single Intravitreal Injection of RTx-021 in Patients With Stargardt DiseaseA Phase 1/2, open-label, non-randomized, dose-escalation study, where a minimum of 9 and a maximum of 18 eligible patients with Stargardt Disease will be enrolled sequentially in up to 3 dose cohorts of RTx-021. Enrolled patients will receive a single, unilateral intravitreal injection of RTx-021 in the study eye and be followed for 5 years.