title: Wavefront-guided treatment for previous laser in situ keratomileusis and photorefractive keratectomy: case reports.
abstract: OBJECTIVE
  To describe the off-label use of the Alcon LADARVision System for CustomCornea (LADARWave and LADARVision4000) in two patients, one for retreatment after laser in situ keratomileusis (LASIK) and one for retreatment after photorefractive keratectomy (PRK).
  
  
  RESULTS
  Both patients were unhappy with the quality of their vision after initial refractive surgery. The first patient initially had LASIK to correct -4.75 D of myopia in each eye, and then had retreatment with CustomCornea. Before retreatment, manifest refraction was OD 0.50 -0.50 x 180 degrees (20/25 uncorrected) and OS -0.50 -0.75 x 180 degrees (20/40 uncorrected). Two months after retreatment with CustomCornea, his uncorrected visual acuity OD was 20/15, and 1 month after retreatment in his left eye, uncorrected visual acuity was 20/15. The second patient had PRK OD, with a postoperative uncorrected visual acuity of 20/25 and cycloplegic refraction of +1.00 -0.75 x 84 degrees. After CustomCornea retreatment, his 3.5-month postoperative uncorrected visual acuity was 20/15 and manifest refraction was +0.50 -0.50 x 180 degrees.
  
  
  CONCLUSIONS
  The Alcon LADARVision System for CustomCornea was used effectively to retreat both a myopic LASIK and myopic PRK patient, primarily for subjective quality of night vision complaints.
authors.affiliation: Cedars-Sinai Medical Center, Beverly Hills, CA 90048, USA. jjsalzeye@aol.com
authors.forename: James J
authors.initials: JJ
authors.lastname: Salz
mesh_terms: D000328:Adult; D003319:Corneal Stroma / Q000601:surgery*; D019781:Corneal Topography; D018795:Device Approval; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000009:adverse effects* / Q000379:methods*; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D018903:Photorefractive Keratectomy / Q000009:adverse effects*; D012029:Refraction, Ocular / Q000502:physiology; D012086:Reoperation; D013524:Surgical Flaps; D014786:Vision Disorders / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D014792:Visual Acuity / Q000502:physiology