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To assess the value of the central foveal thickness (CFT) and the area of the epiretinal membrane (ERM), which is not in contact with the retinal structure, as a prognostic factor for ERM surgery outcome


Retrospective consecutive study including 50 eyes of 41 patients with the diagnosis of ERM. All eyes underwent pars plana vitrectomy (PPV) and ERM peeling assisted by a colouring agent by an experienced surgeon. Corrected distance visual acuity (CDVA) and CFT were evaluated preoperatively and at 6 months postoperatively. Furthermore, the ERM portion which was elevated was detected in the OCT image and processed digitally to obtain its area.


LogMAR CDVA improved significantly with surgery (p<0.01). CFT decreased significantly with surgery (p<0.01). A statistically significant correlation was found between the change in LogMAR CDVA and preoperative CFT (r=-0.60, p<0.01). The preoperative elevated area of ERM has a week trend but not significant correlation with the change in LogMAR CDVA (r=-0.16, p=0.26).


This software could be used for safer membrane peeling but seems to need more precise tissue differentiation for being a strong significant predictive factor for visual outcome after PPV and ERM peeling. A better visual outcome is expected after PPV and membrane peeling in ERM eyes with high CFT.