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Mesenchymal Stromal/Stem Cells (MSCs)

Last medically reviewed: October 7, 2026

Mesenchymal stromal cells — often called mesenchymal stem cells (MSCs) — are cells found in tissues such as bone marrow, fat and the umbilical cord. International criteria define MSCs by laboratory characteristics such as surface markers and the ability to differentiate into bone, fat and cartilage cells in culture.

Research is not treatment. The studies summarized below are investigational. They are presented for education only, do not show that any approach is safe or effective in patients, and are not a recommendation. Unless stated as FDA-approved, none of these approaches is approved for this condition. RUO materials are not for human use.

What MSCs are

MSCs are defined in the laboratory by consensus criteria; preparations from different sources and manufacturers can differ substantially.[1]

Sources

Bone marrow, adipose (fat) tissue, umbilical cord (including Wharton’s jelly), and other tissues.

What researchers study in the eye

Paracrine signaling — the growth factors, cytokines and extracellular vesicles MSCs secrete.

Immunomodulation — effects on immune cells, studied in models of ocular inflammation.

Neuroprotection — retinal ganglion cell survival in animal models of glaucoma and optic nerve injury.

Angiogenesis and tissue repair in laboratory and animal models.

EVIDENCE VERIFICATION REQUIRED. Specific studies have not yet been verified by our reviewers. Search the literature: PubMed search: mesenchymal stem cells ophthalmology

Where the evidence stands

Most MSC research in ophthalmology is preclinical. Human evidence is limited and early-stage.

Regulatory status: to our knowledge as of our last review, no product in this category is FDA-approved to treat an eye disease. The FDA has warned the public about unapproved stem cell and exosome products.[2]

A documented risk

A published case series described severe vision loss after intravitreal injection of autologous cell preparations at a clinic outside a regulated trial.[3]

Answers

Related conditions

Frequently Asked Questions

Are MSC eye injections approved?

Not to our knowledge for any eye disease. The FDA has warned about unapproved stem cell products.

Patients

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Professionals

Scientific education and research resources.

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References

  1. Dominici M, et al. Minimal criteria for defining multipotent mesenchymal stromal cells. The International Society for Cellular Therapy position statement. Cytotherapy, 2006. [Consensus / position statement · citation details pending reviewer confirmation]
  2. FDA Warns About Stem Cell Therapies (consumer update). U.S. Food and Drug Administration. [Regulator · citation details pending reviewer confirmation]
  3. Kuriyama AE, Albini TA, et al. Vision Loss after Intravitreal Injection of Autologous "Stem Cells" for AMD. New England Journal of Medicine, 2017. [Peer-reviewed study · citation details pending reviewer confirmation]
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