title: Retinal displacement toward optic disc after internal limiting membrane peeling for idiopathic macular hole.
abstract: OBJECTIVE
  To examine the retinal displacement following successful macular hole (MH) surgery with internal limiting membrane (ILM) peeling and gas tamponade, and to determine the correlation between the extent of displacement and the basal MH size.
  
  
  METHODS
  Retrospective, interventional, observational case series.
  
  
  METHODS
  The medical records of consecutive patients with an idiopathic MH that had undergone vitrectomy with ILM peeling and gas tamponade were studied. The distances between the optic disc and the intersection of 2 retinal vessels located nasal or temporal to the fovea were measured manually preoperatively (A), and 2 weeks and 1, 3, 6, and 12 months postoperatively (B), on the fundus autofluorescence or near-infrared images. The basal and minimum diameters of the MHs were measured in the spectral-domain optical coherence tomographic images. The correlations between the ratio of the retinal displacement (A - B/A) and basal diameters of the MHs were determined.
  
  
  RESULTS
  Twenty-one eyes of 21 patients (9 men, mean age: 64.6 ± 8.4 years) were studied. Ten eyes (47.6%) had stage 2 MH, 9 eyes (42.9%) had stage 3 MH, and 2 eyes (9.5%) had stage 4 MH. The temporal retinal vessels were displaced 260.8 ± 145.8 μm toward the optic disc at 2 weeks postoperatively, which was significantly greater than the 91.1 ± 89.7 μm of the nasal retinal vessels (paired t test, P < .001). The ratio of retinal displacement in the temporal field at 2 weeks was significantly correlated with the basal diameter of the MH (Spearman's rank correlation coeffieient = -0.476, P = .033.
  
  
  CONCLUSIONS
  The greater displacement of the temporal retina than the nasal retina toward the optic disc postoperatively suggests that the temporal retina is more flexible and can be retracted toward the optic disc during the MH closure.
authors: Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, Kanagawa, Japan.
authors: Masahiro
authors: M
authors: Ishida
authors: Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, Kanagawa, Japan.
authors: Yoshikazu
authors: Y
authors: Ichikawa
authors: Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, Kanagawa, Japan.
authors: Rieko
authors: R
authors: Higashida
authors: Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, Kanagawa, Japan.
authors: Yorihisa
authors: Y
authors: Tsutsumi
authors: Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, Kanagawa, Japan.
authors: Atsushi
authors: A
authors: Ishikawa
authors: Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, Kanagawa, Japan. Electronic address: yimamura.ny@gmail.com.
authors: Yutaka
authors: Y
authors: Imamura
mesh_terms: D000368:Aged; D001485:Basement Membrane / Q000503:physiopathology / Q000601:surgery; D058450:Endotamponade; D019773:Epiretinal Membrane / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000473:pathology*; D016684:Prone Position; D012160:Retina / Q000503:physiopathology*; D012167:Retinal Perforations / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D013459:Sulfur Hexafluoride / Q000008:administration & dosage; D041623:Tomography, Optical Coherence; D014792:Visual Acuity / Q000502:physiology; D014821:Vitrectomy
chemical_list: D013459:Sulfur Hexafluoride