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Human retinal organoids derived from induced pluripotent stem cells (iPSCs) serve as a promising preclinical model for testing the safety and efficacy of viral gene therapy. Retinal organoids recapitulate the stratified multilayered epithelium structure of the developing and maturating human retina. As such, retinal organoids are unique tools to model retinal disease and to test therapeutic interventions toward their amelioration. Here, we describe a method for the generation of human iPSC-derived retinal organoids and how they can be utilized for the assessment of recombinant adeno-associated viral (rAAV)-mediated gene delivery.