title: [Preoperative factors for postoperative resolution of metamorphopsia in idiopathic macular hole surgery].
abstract: OBJECTIVE
  To elucidate factors for resolution of metamorphopsia after successful surgery for idiopathic macular hole.
  
  
  METHODS
  A series of 15 cases of 15 patients with successful surgery for idiopathic macular hole were evaluated for signs of metamorphopsia before and one year after surgery. Preoperative and postoperative assessments included testing of metamorphopsia using M-CHART and optical coherence tomography. The postoperative state of the metamorphopsia was judged to have resolved when the test score was 0.2 or less and to be residual when it was more than 0.2. Classification of preoperative factors in two groups of patients included evaluation of metamorphopsia score, visual acuity, optical coherence tomography findings, and clinical stage of macular hole.
  
  
  RESULTS
  Six of 15 eyes (40%) showed postoperative resolution of metamorphopsia. There was no significant correlation of postoperative metamorphopsia score with preoperative score or preoperative visual acuity. Eyes with postoperative resolution of metamorphopsia had a macular hole with a significantly smaller diameter and a significantly thinner retina surrounding the hole. Two eyes with clinical stage 4 macular hole had residual metamorphopsia after surgery.
  
  
  CONCLUSIONS
  The diameter of a macular hole and the thickness of the retina surrounding a macular hole are significant preoperative factors for postoperative resolution of metamorphopsia after idiopathic macular hole surgery.
authors.affiliation: Department of Ophthalmology, Surugadai Hospital of Nihon University, 1-8-13 Surugadai, Kanda, Chiyoda-ku, Tokyo 101-8309, Japan.
authors.forename: Bunei
authors.initials: B
authors.lastname: Uei
authors.forename: Zeon
authors.initials: Z
authors.lastname: Lee
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shimada
authors.forename: Mitsuko
authors.initials: M
authors.lastname: Yuzawa
mesh_terms: D000368:Aged; D003941:Diagnostic Techniques, Ophthalmological; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D012167:Retinal Perforations / Q000503:physiopathology / Q000601:surgery*; D041623:Tomography, Optical Coherence; D014786:Vision Disorders / Q000503:physiopathology*; D014792:Visual Acuity