title: Idiopathic macular hole surgery in Chinese patients: a randomised study to compare indocyanine green-assisted internal limiting membrane peeling with no internal limiting membrane peeling.
abstract: OBJECTIVE
  To compare the anatomical and visual outcomes of primary idiopathic macular hole surgery using indocyanine green-assisted internal limiting membrane peeling versus no internal limiting membrane peeling.
  
  
  METHODS
  Prospective randomised controlled clinical trial.
  
  
  METHODS
  University teaching hospital, Hong Kong.
  
  
  METHODS
  Fifty-one eyes of 49 Chinese patients with primary idiopathic macular hole were studied.
  
  
  METHODS
  Patients were randomised to undergo pars plana vitrectomy with indocyanine green-assisted internal limiting membrane peeling (26 eyes) or surgery without internal limiting membrane peeling (25 eyes). Perfluorocarbon gas was used in all cases as internal tamponade.
  
  
  METHODS
  Primary macular hole closure rate and best-corrected visual acuity.
  
  
  RESULTS
  The mean follow-up duration was 12 months (range, 6-23 months). Respectively to the indocyanine green-assisted internal limiting membrane peeling group and non-internal limiting membrane peeling group, the primary anatomical closure rate was 92.3% and 32.0% (P<0.001), whereas improvement in best-corrected visual acuity was 3.7 and 1.5 lines (P=0.002). More eyes in the first group (84.6%) had improvement of 2 or more lines of best-corrected visual acuity after surgery than in the second group (32.0%) [P<0.001]. Multivariate logistic regression showed indocyanine green-assisted internal limiting membrane peeling was the only significant predictor for primary closure of the macular hole (adjusted odds ratio=30.8).
  
  
  CONCLUSIONS
  Indocyanine green-assisted internal limiting membrane peeling in idiopathic macular hole surgery results in significantly better anatomical and visual outcomes compared with non-internal limiting membrane peeling in Chinese patients.
authors.affiliation: Department of Ophthalmology, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong. alvinkwok@hksh.com
authors.forename: A K H
authors.initials: AK
authors.lastname: Kwok
authors.forename: T Y Y
authors.initials: TY
authors.lastname: Lai
authors.forename: V W Y
authors.initials: VW
authors.lastname: Wong
mesh_terms: D000293:Adolescent; D004396:Coloring Agents / Q000008:administration & dosage; D019773:Epiretinal Membrane / Q000601:surgery; D006723:Hong Kong; D006801:Humans; D007208:Indocyanine Green / Q000008:administration & dosage; D016015:Logistic Models; D015999:Multivariate Analysis; D011183:Postoperative Complications; D011446:Prospective Studies; D012160:Retina / Q000473:pathology / Q000601:surgery; D012163:Retinal Detachment / Q000209:etiology; D012167:Retinal Perforations / Q000601:surgery*; D016896:Treatment Outcome; D014785:Vision, Ocular; D014821:Vitrectomy / Q000379:methods*
chemical_list: D004396:Coloring Agents; D007208:Indocyanine Green