Michele Coppola1, Maria Brambati2, Maria Vittoria Cicinelli3,4, Alessandro Marchese2,5, Emma Clara Zanzottera1, Antonio Peroglio Deiro1, Michal Post6, Francesco Bandello2,5. 1. Department of Ophthalmology, San Gerardo Hospital, Monza, Italy. 2. Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy. 3. Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132, Milan, Italy. Cicinelli.mariavittoria@hsr.it. 4. School of Medicine, Vita-Salute San Raffaele University, Milan, Italy. Cicinelli.mariavittoria@hsr.it. 5. School of Medicine, Vita-Salute San Raffaele University, Milan, Italy. 6. Department of Ophthalmology, SPKSO Ophthalmic Hospital, Medical University of Warsaw, Warsaw, Poland.
Abstract
PURPOSE: To analyze the functional impact of ectopic inner foveal layers (EIFL), along with other clinical and optical coherence tomography biomarkers, on patients with epiretinal membrane (ERM) and preserved foveal layers' segmentation undergoing ERM removal. METHODS: Retrospective review of consecutive patients with ERM who underwent pars plana vitrectomy with ERM peeling from December 2018 to December 2019. Baseline factors including age, gender, lens status, phacoemulsification at the time of surgery, tamponade agent, dye used for ERM and internal limiting membrane (ILM) enhancement, ILM peeling, best-corrected visual acuity (BCVA) and central macular thickness (CMT), presence and thickness of EIFL, thickness of outer nuclear layer (ONL), presence of a cotton ball, subfoveal state of photoreceptors, and presence of cystoid macular edema were included in a multivariable model having the BCVA at 12 months as the main outcome. The changes in EIFL and ONL thickness over time were also analyzed. RESULTS: Fifty-one patients (58 eyes, 23 eyes in the no EIFL group, and 35 eyes in the EIFL group) were enrolled. The BCVA significantly improved over 12 months after surgery, regardless of the presence of EIFL (p < 0.001). Eyes with no EIFL had better BCVA at month 3 (p = 0.04), but this difference was no longer detectable at 6 and 12 months. The presence of EIFL was not associated with the final BCVA (p = 0.9), while the CMT at 12 months correlated with EIFL thickness (r = 0.8, p = 0.008). CONCLUSION: Patients with EIFL could reach optimal visual acuity in the absence of disorganization of the inner retinal layers but should be warned of potentially longer healing times. None of the morphologic signs included in this study precluded good visual recovery on long-term follow-up.
PURPOSE: To analyze the functional impact of ectopic inner foveal layers (EIFL), along with other clinical and optical coherence tomography biomarkers, on patients with epiretinal membrane (ERM) and preserved foveal layers' segmentation undergoing ERM removal. METHODS: Retrospective review of consecutive patients with ERM who underwent pars plana vitrectomy with ERM peeling from December 2018 to December 2019. Baseline factors including age, gender, lens status, phacoemulsification at the time of surgery, tamponade agent, dye used for ERM and internal limiting membrane (ILM) enhancement, ILM peeling, best-corrected visual acuity (BCVA) and central macular thickness (CMT), presence and thickness of EIFL, thickness of outer nuclear layer (ONL), presence of a cotton ball, subfoveal state of photoreceptors, and presence of cystoid macular edema were included in a multivariable model having the BCVA at 12 months as the main outcome. The changes in EIFL and ONL thickness over time were also analyzed. RESULTS: Fifty-one patients (58 eyes, 23 eyes in the no EIFL group, and 35 eyes in the EIFL group) were enrolled. The BCVA significantly improved over 12 months after surgery, regardless of the presence of EIFL (p < 0.001). Eyes with no EIFL had better BCVA at month 3 (p = 0.04), but this difference was no longer detectable at 6 and 12 months. The presence of EIFL was not associated with the final BCVA (p = 0.9), while the CMT at 12 months correlated with EIFL thickness (r = 0.8, p = 0.008). CONCLUSION:Patients with EIFL could reach optimal visual acuity in the absence of disorganization of the inner retinal layers but should be warned of potentially longer healing times. None of the morphologic signs included in this study precluded good visual recovery on long-term follow-up.
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