POSTOPERATIVE RESTORATION OF FOVEAL INNER RETINAL CONFIGURATION IN PATIENTS WITH EPIRETINAL MEMBRANE AND ABNORMALLY THICK INNER RETINA

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Abstract

Purpose:

To investigate foveal inner retinal layer (IRL) restoration and its relationship with functional visual outcomes after membrane peeling in eyes with idiopathic epiretinal membrane (ERM) with foveal central thick IRL.

Methods:

Consecutive eyes (n = 57) with a thick foveal IRL that underwent 25-gauge vitrectomy for ERM treatment were included. Complete ophthalmic and spectral domain optical coherence tomography examinations were performed before and 1 year after surgery.

Results:

Before surgery, mean best-corrected visual acuity (BCVA) was 20/48 (logMAR, 0.38); central foveal thickness, 515.0 ± 90.9 μm; and central IRL thickness (CIRLT) at the fovea, 167.7 ± 80.1 μm. One year after ERM peeling, mean BCVA improved to 20/30 (logMAR, 0.18), central foveal thickness to 404.1 ± 96.4 μm, and CIRLT to 76.8 ± 68.0 μm. In multivariate analysis, initial BCVA and CIRLT at baseline correlated well with final BCVA and BCVA improvement at 12 months. In comparison with Group B eyes (persistently thick foveal IRL at 12 months), Group A eyes (restored foveal IRL at 12 months) had thinner CIRLT at baseline and showed a significant post-surgical improvement in BCVA and metamorphopsia.

Conclusion:

In eyes with idiopathic ERM and decreased vision due to abnormally thick IRL in the foveal center, postoperative visual outcomes correlated well with preoperative CIRLT and postoperative restoration of IRL configuration after ERM peeling.

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