OCT analysis of preoperative foveal microstructure in recent-onset macula-off rhegmatogenous retinal detachment: visual acuity prognostic factors

Author:

Savastano Maria Cristina,Carlà Matteo MarioORCID,Giannuzzi Federico,Fossataro Claudia,Cestrone Valentina,Boselli Francesco,Biagini Ilaria,Beccia Flavia,Raffaele Quatrale,Gravina Gianni,Rizzo ClaraORCID,Savastano Alfonso,Rizzo StanislaoORCID

Abstract

BackgroundTo evaluate, in patients undergoing macula-off rhegmatogenous retinal detachment surgery (RRD), the correlation between preoperative optical coherence tomography (OCT) morphological features and postoperative visual acuity.MethodsRetrospective interventional non-randomised clinical trial on 89 eyes of 89 patients undergoing pars plana vitrectomy for macula-off primary RRD at Policlinico Universitario Agostino Gemelli from 2020 to 2023. Preoperative 6×6 mm OCT B scans with Nidek Mirante (Nidek, Gamagori, Japan) were performed, collecting the following features: foveal involvement (fovea-on vs fovea-off), subretinal hyper-reflective points (HRPs), outer retinal corrugations (ORCs) and intraretinal cystic spaces (ICS) in the outer nuclear layer. The patients were followed in a 6-month follow-up to evaluate best-corrected visual acuity (BCVA) outcomes.ResultsPreoperative mean BCVA was 0.15±0.22 and improved to 0.29±0.3 decimals at 6 months (p<0.001). The presence of subretinal HRPs showed a significant negative impact on BCVA improvement in the univariate regression analysis (r=−0.264, p=0.024), as well as the presence of foveal detachment (r=−0.355, p=0.012). The other OCT features did not show a significant correlation with BCVA improvement: ORCs (r=0.072, p=0.257) and ICS (r=−0.020, p=0.734). In the multivariate regression analysis, the negative impact of foveal detachment was confirmed (r=−0.199, p=0.05) while the statistical significance of subretinal HRPs was lost (r=−0.135, p=0.105).ConclusionsThe negative impact of foveal involvement in a macula-off RRD was confirmed. Moreover, the presence of subretinal HRPs, as a possible indirect marker of inflammatory response extent, may act as a negative predictor for postoperative visual recover.Trial registration numberNCT05747144.

Publisher

BMJ

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