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Preoperative factors predictive of postoperative decimal visual acuity ≥ 1.0 following surgical treatment for idiopathic epiretinal membrane

By Hiroshi Kunikata, Toshiaki Abe, Jiro Kinukawa and et al

Abstract

Hiroshi Kunikata1, Toshiaki Abe2, Jiro Kinukawa1, Kohji Nishida1,31Department of Ophthalmology and Visual Science, Tohoku University Graduate School of Medicine, Sendai, Japan; 2Division of Clinical Cell Therapy, Tohoku University Graduate School of Medicine, Sendai, Japan; 3Department of Ophthalmology, Osaka University Medical School, Suita, JapanPurpose: To report the preoperative best-corrected visual acuity (BCVA) and foveal thickness (FT) values that lead to a postoperative decimal BCVA of ≥ 1.0 after surgical removal of an idiopathic epiretinal membrane (ERM).Methods: This is a retrospective case series of 73 eyes that underwent surgery for removal of an idiopathic ERM. All eyes had been treated by a single surgeon using a 25-gauge transconjunctival sutureless vitrectomy and indocyanine green-assisted internal limiting membrane peel. The BCVA and FT were measured at baseline and 6 months postoperatively.Results: A postoperative decimal BCVA ≥ 1.0 was obtained in eyes with a preoperative decimal BCVA ≥ 0.3 but not in those with a preoperative decimal BCVA ≤ 0.2. The incidence of obtaining a postoperative decimal BCVA ≥ 1.0 was significantly (P = 0.002) higher in eyes with a preoperative decimal BCVA ≥ 0.5 (50%) than in eyes with a preoperative decimal BCVA < 0.5 (11%). Additionally, a postoperative decimal BCVA of ≥ 1.0 was obtained in 51% of the eyes that had a preoperative FT < 400 µm, compared with only 21% of eyes with a preoperative FT ≥ 400 µm (P = 0.01). The incidence of obtaining a postoperative decimal BCVA ≥ 1.0 was significantly higher in eyes with preoperative decimal BCVA ≥ 0.5 and FT < 400 µm (60%) than in eyes with preoperative decimal BCVA ≥ 0.5 and FT ≥ 400 µm (20%; P = 0.03 ) or preoperative BCVA < 0.5 and FT ≥ 400 µm (7%; P < 0.001).Conclusions: These findings indicate that eyes with both preoperative BCVA ≥ 0.5 and FT < 400 µm have a significantly better chance of obtaining a postoperative decimal BCVA ≥ 1.0 following idiopathic ERM removal.Keywords: 25-gauge vitrectomy, optical coherence tomography, epimacular membrane, epiretinal membrane, visual acuity, foveal thicknes

Topics: Ophthalmology, RE1-994, Medicine, R, DOAJ:Ophthalmology, DOAJ:Medicine (General), DOAJ:Health Sciences
Publisher: Dove Medical Press
Year: 2011
OAI identifier: oai:doaj.org/article:1d2fc4081b514b89827991d54339eb6e
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