Intrastromal autologous implantation of adipose derived adult stem cells for the management of established corneal scars.

Early human evidence such as case series or small samples is exploring possible benefits.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Purpose To describe a case of well-documented corneal stroma transparency improvement following the intrastromal implantation of autologous adipose-derived mesenchymal stem cells (ADASC) in a keratoconic patient with established stromal scars. Observations ADASC were isolated by elective liposuction, and a solution composed of 3x106 ADASC contained in 1mL saline was used to soak a corneal intrastromal pocket created with femtosecond laser at mid-depth. No signs of inflammation or rejection were observed. One year after surgery, we observed a complete restoration of the pre-existing corneal stroma scars, observed both clinically and by anterior segment OCT. The rest of the visual and topographic parameters did not show relevant changes except for the patient's refractive sphere. OCT showed a thin new layer of neocollagen deposited at the surgical plane. Total stroma optical density (OD) improved from 51.5 to 41.2 GSU, anterior stroma OD improved from 55.9 to 42.8 GSU, and posterior stroma OD improved from 46.9 to 39.6 GSU. Conclusions and importance This clinical case provides new clinical evidence supporting the use of intrastromal mesenchymal stem cell implantation to solve or alleviate established corneal scars.

Evidence level

Early human evidence such as case series or small samples is exploring possible benefits.

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