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Correlation of Visual Recovery to Presence of Photoreceptor Inner/Outer Segment Junction in Optical Coherence Images after Epiretinal Membrane Surgery
  1. Yoshinori Mitamura (ymitaymitaymita{at}yahoo.co.jp),
  2. Kaori Hirano,
  3. Takayuki Baba (babatakayuki{at}nifty.com),
  4. Shuichi Yamamoto (shuyama{at}faculty.chiba-u.jp)
  1. Chiba University Graduate School of Medicine, Japan
  2. Chiba University Graduate School of Medicine, Japan
  3. Chiba University Graduate School of Medicine, Japan
  4. Chiba University Graduate School of Medicine, Japan

    Abstract

    Aims: To investigate the relationship between the presence of the photoreceptor inner and outer segment (IS/OS) junction and visual acuity after epiretinal membrane (ERM) surgery.

    Methods: Seventy eyes of 70 consecutive patients who had undergone vitrectomy for idiopathic ERMs were examined by optical coherence tomography (OCT) preoperatively and at 3 and 6 months postoperatively. The IS/OS junction was graded into three grades. The time course of recovery of the IS/OS junction, central foveal thickness (CFT), and best corrected visual acuity (BCVA) during the postoperative period was studied.

    Results: A normal IS/OS junction was detected in 47.1% of the eyes preoperatively, 65.7% at 3 months postoperatively, and 75.7% at 6 months postoperatively. There was a significant correlation between the IS/OS grade and the BCVA preoperatively and at 3 and 6 months postoperatively (P=0.0001, P<0.0001, P<0.0001, respectively). The preoperative IS/OS junction grade was significantly correlated with the BCVA at 6 months (P=0.0239). The CFT was not significantly correlated with the BCVA at 3 and 6 months.

    Conclusion: The presence of a normal IS/OS junction was associated with good visual acuity after ERM surgery. A normal IS/OS junction probably indicates a morphological and functional recovery of the photoreceptors.

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