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A. Mastrocola, A. Scupola, P. Sasso, S. Traina, S. Petroni, R. Fasciani, M. Savastano, E. Balestrazzi; Microperimetric Evaluation of Idiopathic Epiretinal Membrane Before and After Surgery. Invest. Ophthalmol. Vis. Sci. 2008;49(13):4698.
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© ARVO (1962-2015); The Authors (2016-present)
To perform morphofunctional evaluation of patients with idiopathic epiretinal membrane (MER), before and after surgery, by microperimetry (MP1) and optical coherence tomography (OCT).
Nineteen eyes of nineteen consecutive patients with idiopathic MER were treated with vitrectomy and peeling of MER. Preoperatively and 1, 3, 6 months after surgery, all patients underwent complete ophthalmological examination including best corrected visual acuity (BCVA; in logarithm of the minimum angle of resolution units) (LogMAR), macular sensitivity and retinal fixation investigated using MP1 and macular thickness quantified with OCT.
Before surgery mean BCVA was 0,5 ± 0,92 logMAR, mean retinal sensitivity was 9,9 ± 1,67 dB, and mean retinal thickness was 474 ± 116 µm. Six month after surgery, mean BCVA improved to 0,2 ± 0,92 LogMAR and macular sensitivity increased with 12 ± 1,6 dB as well as stability of fixation. Preoperative macular sensitivity at 4° , 8° and 10°, separately analyzed, showed a mean baseline sensitivity lower in the central 4°(7,9 ± 2,1 dB), 8°(10,2 ± 1,2 dB) area compared with the peripherical 10° area (11 ± 1,6 dB). Six month after surgery, macular sensitivity showed an higher improvement in the central 4°(11 ± 5,3 dB) , 8° area (12,9 ± 3,5 dB) compared with peripherical 10° area (11,1 ± 1,9 dB). Macular thickness decreased of 290 µm at 6 month of follow up.
The analysis of retinal sensitivity after surgical removal of idiopathic MER, showed a better improvement in the central macular area compared with the peripherical one probably related with the higher decrease of foveal thickness.
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