title: Retreatment after wavefront-guided and standard myopic LASIK.
abstract: OBJECTIVE
  To assess and compare the clinical outcomes of conventional LASIK retreatments after primary wavefront-guided and standard myopic LASIK.
  
  
  METHODS
  Retrospective review of interventional case series.
  
  
  METHODS
  One hundred fifty-four eyes of 114 consecutive patients underwent a conventional LASIK retreatment after previous wavefront-guided and standard myopic LASIK. The eyes were divided into two groups: standard conventional myopic LASIK (SM) (n = 101) and wavefront-guided myopic LASIK (WM) (n = 53).
  
  
  METHODS
  Retreatment LASIK was performed by lifting the original flap and using an excimer laser.
  
  
  METHODS
  Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), refraction, and complications were evaluated at a mean follow-up of 7.8+/-5.5 months after retreatment (range, 3-26).
  
  
  RESULTS
  At the last visit, mean spherical equivalents (SEs) were -0.17+/-0.42 diopters (D) in the SM group and -0.11+/-0.34 D in the WM group (P = 0.394). An SE of +/-0.50 D was achieved in 87% (88/101) of SM eyes and 91% (49/53) of WM eyes. Seventy-five percent of eyes in both groups had UCVA> or =20/20. All eyes in the WM group and 98% of eyes in the SM group had 20/30 or better UCVA. All eyes in both groups had a postoperative BSCVA of 20/25 or better. No eyes lost 2 lines of BSCVA in either group. No sight-threatening complications were encountered. The number of eyes with pre-retreatment optical symptoms was reduced to half after retreatment.
  
  
  CONCLUSIONS
  Our results suggest that retreatment with conventional LASIK is a safe, effective, predictable way of dealing with different types of residual refractive errors after both wavefront-guided and standard myopic LASIK.
authors.affiliation: Eye Institute of Utah, Salt Lake City, Utah 84107, USA. georgejin@hotmail.com
authors.forename: George J C
authors.initials: GJ
authors.lastname: Jin
authors.forename: Kevin H
authors.initials: KH
authors.lastname: Merkley
mesh_terms: D000328:Adult; D000368:Aged; D003319:Corneal Stroma / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007431:Intraoperative Complications; D020731:Keratomileusis, Laser In Situ / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D017060:Patient Satisfaction; D011183:Postoperative Complications; D011184:Postoperative Period; D012029:Refraction, Ocular / Q000502:physiology; D012086:Reoperation; D012189:Retrospective Studies; D013524:Surgical Flaps; D013997:Time Factors; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology