title: Correction of high astigmatism: case studies using the mixed-cylinder approach.
abstract: OBJECTIVE
  To explain the use of the mixed-cylinder approach in treating moderate to high astigmatism with the NIDEK EC-5000 excimer laser system.
  
  
  METHODS
  Retrospective case series report.
  
  
  RESULTS
  Three patients with bilateral moderate to high astigmatism were treated successfully using the mixed cylinder approach.
  
  
  CONCLUSIONS
  The use of the mixed-cylinder approach with the NIDEK EC-5000 excimer laser may be a safe and predictable option for treating moderate to high astigmatism.
authors: University of Alberta, British Columbia, Canada. khan@post.harvard.edu
authors: Hamza N
authors: HN
authors: Khan
authors: Geoffrey B
authors: GB
authors: Kaye
authors: Jean Luc
authors: JL
authors: Febbraro
mesh_terms: D000328:Adult; D001251:Astigmatism / Q000150:complications / Q000503:physiopathology / Q000628:therapy*; D003315:Cornea / Q000473:pathology / Q000601:surgery; D019781:Corneal Topography; D004867:Equipment Design; D005139:Eyeglasses; D005500:Follow-Up Studies; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000150:complications / Q000503:physiopathology / Q000628:therapy; D012029:Refraction, Ocular; D012720:Severity of Illness Index; D014792:Visual Acuity