Marginal Outer Retinal Ridge after Rhegmatogenous Retinal Detachment Repair: A Novel Biomarker of Retinal Displacement.

PURPOSE: To describe a novel postoperative OCT finding after rhegmatogenous retinal detachment (RRD) repair and explore its relationship with retinal displacement.

DESIGN

Retrospective consecutive case series.

PARTICIPANTS

Patients with primary RRD with partial macular involvement who underwent successful repair.

METHODS

Patients after RRD repair who demonstrated a marginal outer retinal ridge (MORR) on postoperative OCT were included. MORR was defined as a linear outer retinal hyperreflective ridge adjacent and parallel to the RRD margin.

MAIN OUTCOME MEASURES: Clinical characteristics, surgical variables, multimodal imaging findings, and evidence of retinal displacement were assessed.

RESULTS

Twelve eyes were included. MORRs were predominantly located along the inferior RRD margin (11/12) and were detectable as early as postoperative day 1. In 4 of 12 eyes (33.3%), MORRs occurred in regions that were attached at presentation. MORRs resolved spontaneously within months in all cases. In 2 cases, MORR involved the fovea. Retinal displacement was more pronounced superior to a MORR, supporting retinal redundancy as the mechanism of formation.

CONCLUSIONS

MORR represents a novel OCT biomarker of retinal displacement and reflects postoperative retinal redundancy. Recognition of MORR provides new insight into the biomechanics of retinal reattachment and may have implications for surgical technique, postoperative imaging, and functional outcomes.

FINANCIAL DISCLOSURE(S): Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.