title: Outcomes of retreatment after laser in situ keratomileusis.
abstract: OBJECTIVE
  To evaluate the safety and efficacy of retreatment after myopic laser in situ keratomileusis (LASIK).
  
  
  METHODS
  Retrospective, noncomparative case series.
  
  
  METHODS
  A total of 962 eyes of 566 patients underwent LASIK for up to -20.0 diopters (D) of myopia, of which 53 eyes (5.5%) were retreated.
  
  
  METHODS
  Retreatments were performed by lifting the original flap and using the Nidek EC-5000 excimer laser (Nidek Inc., Tokyo, Japan).
  
  
  METHODS
  Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BCVA), fogged manifest refraction, and complications were evaluated 6 months after retreatment.
  
  
  RESULTS
  Overall, 53 (5.5%) of 962 eyes underwent LASIK retreatment. Before retreatment, the mean spherical equivalent (MSE) was -1.7 +/- 1.1 D (range, +0.3 to -5.0 D), UCVA ranged from 20/25 to 20/400, and BCVA ranged from 20/20 to 20/50. Six months after retreatment, the MSE was -0.09 +/- 0.29 D, 48 (90.6%) eyes were within +/-0.5 D, and all eyes were within +/-1.0 D of the attempted correction. The UCVA improved to 20/20 or better in 21 (39.6%) eyes and 20/40 or better in 51 (96.2%) eyes. The BCVA was maintained in 33 eyes (62.3%), 15 eyes (28.3%) gained 1 line or more of vision, whereas 5 eyes (9.4%) lost 1 line. All eyes had a BCVA of 20/50 or better. No retreated eye lost two or more lines of BCVA. No complications were observed.
  
  
  CONCLUSIONS
  Retreatment for low amounts of residual myopia performed by lifting the original flap within the first year after surgery after myopic LASIK is safe, effective, and predictable.
authors.affiliation: Centro Ophtalmologico de Tijuana, BC, Mexico. dzadok@yahoo.com
authors.forename: D
authors.initials: D
authors.lastname: Zadok
authors.forename: G
authors.initials: G
authors.lastname: Maskaleris
authors.forename: V
authors.initials: V
authors.lastname: Garcia
authors.forename: S
authors.initials: S
authors.lastname: Shah
authors.forename: M
authors.initials: M
authors.lastname: Montes
authors.forename: A
authors.initials: A
authors.lastname: Chayet
mesh_terms: D000293:Adolescent; D000328:Adult; D003315:Cornea / Q000601:surgery*; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D012086:Reoperation; D012189:Retrospective Studies; D012449:Safety; D013524:Surgical Flaps; D016896:Treatment Outcome; D014792:Visual Acuity