title: Ocular residual astigmatism's effect on high myopic astigmatism LASIK surgery.
abstract: OBJECTIVE
  To analyze the effect of ocular residual astigmatism (ORA) on the effectiveness of LASIK for treating high myopic astigmatism.
  
  
  METHODS
  This is an observational, cross-sectional study. We studied 116 consecutive myopic eyes with -3 diopters (D) or more of astigmatism that underwent LASIK surgery. The magnitude of uncorrected residual refractive astigmatism 3 months postoperatively was measured.
  
  
  RESULTS
  The mean preoperative cylinder was -4.0±0.83 D (range, -7.5 to -3 D) and the mean preoperative ORA was 0.82±0.5 D. The mean residual refractive cylinder 3 months postoperatively was -0.78±0.83 D (range, -3 to 0 D). No correlation was found between ORA and the refractive cylinder 3 months postoperatively (P=0.6).
  
  
  CONCLUSIONS
  In eyes with high myopic astigmatism undergoing LASIK, ORA was not correlated with the residual postoperative cylinder.
authors: 1] Department of Ophthalmology, Príncipe de Asturias University Hospital, University of Alcalá, Madrid, Spain [2] Novovision Madrid, Madrid, Spain.
authors: M A
authors: MA
authors: Teus
authors: 1] Department of Ophthalmology, Príncipe de Asturias University Hospital, University of Alcalá, Madrid, Spain [2] Novovision Madrid, Madrid, Spain.
authors: C
authors: C
authors: Arruabarrena
authors: Novovision Madrid, Madrid, Spain.
authors: J L
authors: JL
authors: Hernández-Verdejo
authors: Department of Ophthalmology, Príncipe de Asturias University Hospital, University of Alcalá, Madrid, Spain.
authors: R
authors: R
authors: Cañones
authors: 1st University Department of Ophthalmology, Aristotle University of Thessaloniki, Thessaloniki, Greece.
authors: D G
authors: DG
authors: Mikropoulos
mesh_terms: D000328:Adult; D001251:Astigmatism / Q000503:physiopathology*; D003315:Cornea / Q000503:physiopathology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000379:methods*; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology* / Q000601:surgery*; D012029:Refraction, Ocular / Q000502:physiology; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology; D055815:Young Adult