Purpose: To evaluate outer retinal recovery on postoperative optical coherence tomography (OCT) based on presenting morphologic stage of rhegmatogenous retinal detachment (RRD).
Methods: Retrospective cohort of consecutive primary fovea-involving RRDs, referred from January 2012 to September 2022. Baseline OCTs were assessed for morphologic stage of RRD. Postoperative OCT scans were graded at 3, 6, and 12 months for external limiting membrane, ellipsoid zone and interdigitation zone discontinuity, epiretinal membrane formation and severity, and residual subfoveal fluid.
Results: Three hundred and fifty-one patients were included. Increasing baseline morphologic stage of RRD was significantly associated with external limiting membrane, ellipsoid zone, and interdigitation zone discontinuity at all time points postoperatively ( P < 0.001) and was shown to be an independent predictor of foveal photoreceptor integrity after adjusting for height of detachment, time to surgery, and duration of fovea involvement ( P < 0.001). Earlier stages were associated with residual subfoveal fluid ( P < 0.001). There was no association between the stages of RRD and epiretinal membrane severity. However, late stages presented with earlier development of epiretinal membrane ( P = 0.012).
Conclusion: Increasing morphologic stage of RRD is associated with delayed recovery of outer retinal bands in the first year and faster development of epiretinal membrane after RRD repair. The results of this study suggest that the stages may serve as a prognostic biomarker for postoperative photoreceptor recovery.
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