Quantitative Evaluation of Metamorphopsia Score Before and After Pars Plana Vitrectomy Operation In Patients with Idiopatic Epiretinal Membranes Using The M-Charts™ and Comparison with Oct Parameters

Abstract

Abstract Purpose: It was aimed to quantitatively evaluate metamorphopsia pre- and postoperatively in patients with idiopathic epiretinal membrane(iERM) using the M-CHARTS™ and to evaluate the relationship between changes in retinal layers in optical coherence tomography (OCT) and metamorphopsia scores. Materials and Methods:This prospective study included patients followed up in Akdeniz University Hospital Ophthalmology Clinic diagnosed with iERM by fundus examination and optical coherence tomography between 2020-2022. Detailed ophthalmologic findings, visual acuities and metamorphopsia scores and OCT parameters of all patients were recorded.The relationship between pre- and postoperative visual acuity, metamorphopsia scores and OCT parameters was investigated. The changes of oct parameters were compared by evaluating patients with decreased metamorphopsia score as one group and patients with stable or increasing metamorphopsia score as the other group. Results: In the group with decreased metamorphopsia score, pre-treatment and post-treatment 12th month GCL+IPL (C) (Ganglion Cell Layer+Inner Plexiform Layer (Central)) value was significantly (p<0.05) higher than the group with metamorphopsia score increase. Conclusion:Statistically significant preoperative thickness difference in the OCT parameters of the GCL+IPL (C) layer in the group with decrease and increase in metamorphopsia scores was associated with the quantitative metamorphopsia complaints of the patients. The thickness of the preoperative GCL+IPL (C) layer can be considered as an important parameter for the symptoms of metamorphopsia that determines the functional success after the surgery.