title: Asymmetrical steepening of the foveal contour after macular hole surgery with internal limiting membrane peeling.
abstract: OBJECTIVE
  We have previously shown that the thickness of the parafoveal retina was asymmetrical in spectral-domain optical coherence tomographic (SD-OCT) images after idiopathic macular hole (MH) closure by pars plana vitrectomy (PPV) with internal limiting membrane (ILM) peeling. The aim of this study was to determine whether the foveal slopes around the closed MH were also asymmetrical.
  
  
  METHODS
  Forty-three eyes with an MH treated with PPV with ILM peeling at Matsumoto Dental University Hospital were studied. The foveal slope was determined with ImageJ software in both the horizontal and vertical images obtained by SD-OCT at 6 months after the surgery. The possible related factors were also compared.
  
  
  RESULTS
  The mean angles of the foveal slopes of the nasal, superior, inferior, and temporal sectors were 31.4° ± 6.2°, 31.2° ± 5.4°, 31.6° ± 7.4°, and 29.9° ± 6.6°, respectively, in the fellow eyes. The corresponding values in the operated eyes were significantly steeper at 50.4° ± 9.1°, 46.9° ± 11.3°, 48.6° ± 11.3°, and 41.3° ± 11.2°, respectively (P < 0.00001). Both the nasal and inferior slopes were significantly steeper than the temporal slopes of the same operated eye (P = 0.002 and P = 0.023, respectively). There was no significant correlation between each slope and the visual acuity, MH size, area of peeled ILM, postoperative parafoveal retinal thickness, defect of the retinal outer layers, disc-foveal distance, stage, and use of dye for ILM peeling.
  
  
  CONCLUSIONS
  Although the postoperative foveal contour was markedly changed asymmetrically, the significance of the change was not determined.
authors.affiliation: Department of Ophthalmology, Matsumoto Dental University, 1780 Gobara, Hirooka, Shiojiri, Nagano, 399-0781, Japan. ohta@po.mdu.ac.jp.
authors.forename: Kouichi
authors.initials: K
authors.lastname: Ohta
authors.affiliation: Department of Ophthalmology, Matsumoto Dental University, 1780 Gobara, Hirooka, Shiojiri, Nagano, 399-0781, Japan.
authors.forename: Atsuko
authors.initials: A
authors.lastname: Sato
authors.affiliation: Department of Ophthalmology, Matsumoto Dental University, 1780 Gobara, Hirooka, Shiojiri, Nagano, 399-0781, Japan.
authors.forename: Nami
authors.initials: N
authors.lastname: Senda
authors.affiliation: Department of Ophthalmology, Matsumoto Dental University, 1780 Gobara, Hirooka, Shiojiri, Nagano, 399-0781, Japan.
authors.forename: Emi
authors.initials: E
authors.lastname: Fukui
mesh_terms: D000368:Aged; D001485:Basement Membrane / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D005584:Fovea Centralis / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D012167:Retinal Perforations / Q000175:diagnosis / Q000601:surgery*; D012189:Retrospective Studies; D041623:Tomography, Optical Coherence / Q000379:methods*; D014792:Visual Acuity; D014821:Vitrectomy / Q000379:methods*
keywords: Foveal contour; Idiopathic macular hole; Internal limiting membrane; Vitrectomy