RecruitingPhase 2Biological interventionSafety of a Single, Intravitreal Injection of 6.0M jCell (Famzeretcel) in Retinitis Pigmentosa (RP)This study evaluates the safety of a single injection of jCell (famzeretcel) comprising 6.0 million (6.0M) retinal progenitor cells over a six-month study period in a cohort of adult subjects with RP. Additionally, changes in visual function will be evaluated at six months between the active treatment group (6.0M jCell) compared to sham-treated controls.