June 2015
Volume 56, Issue 7
Free
ARVO Annual Meeting Abstract  |   June 2015
Inner Nuclear Layer Thickness as a Prognostic Factor for Metamorphopsia after Epiretinal Membrane Surgery
Author Affiliations & Notes
  • RISA MIYATA
    ophthalmology, university of tsukuba, Tsukuba, Japan
  • Fumiki Okamoto
    ophthalmology, university of tsukuba, Tsukuba, Japan
  • Yoshimi Sugiura
    ophthalmology, university of tsukuba, Tsukuba, Japan
  • Yoshifumi Okamoto
    ophthalmology, university of tsukuba, Tsukuba, Japan
  • Takahiro Hiraoka
    ophthalmology, university of tsukuba, Tsukuba, Japan
  • Tetsuro Oshika
    ophthalmology, university of tsukuba, Tsukuba, Japan
  • Footnotes
    Commercial Relationships RISA MIYATA, None; Fumiki Okamoto, None; Yoshimi Sugiura, None; Yoshifumi Okamoto, None; Takahiro Hiraoka, None; Tetsuro Oshika, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2015, Vol.56, 5053. doi:
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      RISA MIYATA, Fumiki Okamoto, Yoshimi Sugiura, Yoshifumi Okamoto, Takahiro Hiraoka, Tetsuro Oshika; Inner Nuclear Layer Thickness as a Prognostic Factor for Metamorphopsia after Epiretinal Membrane Surgery. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):5053.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: To evaluate prognostic factors for metamorphopsia in patients undergoing vitrectomy for epiretinal membrane (ERM) using spectral-domain optical coherence tomography (SD-OCT).

Methods: This study included 53 eyes of 53 patients undergoing vitrectomy for idiopathic ERM. We examined visual acuity, severity of metamorphopsia with M-CHARTS, and retinal microstructures with SD-OCT before surgery and 3 and 6 months after surgery. Central foveal thickness (CFT), parafoveal retinal thickness, macular volume, thickness of the ganglion cell layer (GCL), inner nuclear layer (INL) and outer retinal layer (ONL+OPL: outer nuclear layer and outer plexiform layer) were analyzed using an image-processing program. The status of the outer retinal lines were also evaluated.

Results: Preoperative metamorphopsia score (M-score) significantly correlated with CFT, INL thickness and ONL+OPL thickness. Postoperative M-score significantly correlated with postoperative CFT and INL thickness. INL thickness had significant correlation with M-score at each time point by multiple regression analysis, whereas other parameters were not relevant. Multiple regression analysis showed that preoperative INL thickness yielded the highest regression coefficient with postoperative M-score.

Conclusions: INL thickness was found to be a good indicator of metamorphopsia both before and after surgery, and a predictor of postoperative metamorphopsia in patients with ERM.

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