Long-term durability data are limited because most human trials are <5 years old. Animal studies suggest transplanted retinal cells can integrate and function for years, but human follow-up is sparse. Immune responses or graft rejection might limit lifespan; chronic immunosuppression is not practical for most patients, so long-term survival of allogeneic (donor-derived) cells is uncertain.
Macular degeneration—both age-related (AMD) and inherited forms—involves progressive death of photoreceptor cells (rods and cones) in the central retina. In AMD, a combination of lipid accumulation (drusen), oxidative stress, and chronic inflammation triggers degeneration of the retinal pigment epithelium (RPE), the supportive layer feeding photoreceptors. In inherited retinal dystrophies, genetic mutations directly compromise photoreceptor function or survival. Cell therapy approaches aim to replace lost photoreceptors or RPE cells using fetal-stage stem cells, placental MSCs, or induced pluripotent stem cell (iPSC)-derived retinal cells. These cell types can differentiate into photoreceptors or RPE in controlled environments. The proposed mechanism involves transplantation of functional cells into the macula, where they integrate into damaged retinal circuits and restore light sensitivity and signal transmission to the brain.
Am I a candidate? → · Macular Degeneration & Vision: full overview → · Macular Degeneration & Vision cost → · Cost →
Medically reviewed by StemCellAtlas’s editorial team with the Stem Plus medical team (physicians & scientists · GMP-certified Sofia laboratory · 25+ yrs international experience) of partner clinic Stem Plus (Sofia), against ISSCR, FDA & EMA guidance. Educational information, not medical advice; figures indicative.
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