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Autologous neurosensory retinal transplantation: bridging the gap.

Retina 2021 May 6
PURPOSE: To review the autologous retinal transplantation (ART) surgical technique, indications, rationale, and current outcomes of data published to date.

METHODS: Review of surgical technique, pre- and postoperative best-corrected visual acuity (BCVA), and macular hole (MH) closure rate in studies with at least 5 eyes.

RESULTS: The weighted average MH closure rate is 88% with a MH closure rate ranging from 66.7-100%. The weighted average BCVA improved from mean logMAR of 1.35 (Snellen equivalent of 20/450) preoperatively to mean logMAR 1.02 (Snellen equivalent of 20/210) postoperatively. From the largest ART case series, 37% of patients gained 3 or more lines of visual acuity after ART for primary or refractory MHs and 74% gained 3 or more lines of visual acuity after ART for MH-retinal detachments. Functional improvement including negative Watzke-Allen sign and conversion from positive to negative scotoma was reported in large case series.

CONCLUSION: ART is a promising technique for closure of large and refractory MHs otherwise difficult to repair with conventional techniques. This technique may allow for replacement of neural tissue in the macula through cell rehabilitation and regeneration through presumed ectopic synaptogenesis, retinal progenitor cell differentiation and integration, and/or retinal progenitor cell material transfer to host neurons.

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