title: Laser in situ keratomileusis for residual myopia after primary LASIK.
abstract: OBJECTIVE
  To analyze the results of secondary laser in situ keratomileusis (LASIK) for residual myopia after primary LASIK.
  
  
  METHODS
  Dr. Agarwal's Eye Hospital, Chennai, India.
  
  
  METHODS
  A retrospective study of 50 eyes of 29 patients who had a secondary LASIK procedure was carried out. After a mean follow-up of 5.84 months +/- 3.24 (SD) after the primary procedure, the mean myopic residual refraction was -4.30 +/- 1.83 diopters (D). In 10 eyes, the primary corneal flap was lifted by blunt dissection. In 40 eyes, the flap was made with a second cut. The secondary LASIK was performed using the Chiron Technolas Keracor 217 excimer laser and the Automated Corneal Shaper microkeratome (Bausch & Lomb).
  
  
  RESULTS
  The mean follow-up was 16.58 +/- 3.06 months. At 12 months, the mean spherical equivalent was -0.45 +/- 0.68 D (P <.05). Thirty-one eyes were emmetropic, 13 eyes were within +/-1.00 D of emmetropia, and 5 eyes were within +/-2.00 D. The mean uncorrected visual acuity improved from 20/80 (range 20/60 to 20/200) to 20/40 (range 20/20 to 20/200) (P <.005). Seventeen eyes gained 1 line of best spectacle-corrected visual acuity; 1 eye lost 1 line because of a decentered ablation with an induced postoperative astigmatism of -3.50 D cylinder. No sight-threatening complications such as a free cap, flap irregularity, corneal ectasia, or retinal complication occurred postoperatively. Epithelial ingrowth developed in 5 eyes and corneal thinning, in 1 eye. Three eyes had night glare.
  
  
  CONCLUSIONS
  Secondary LASIK was a safe, stable, and effective method for the treatment of residual myopia after primary LASIK.
authors.affiliation: Dr. Agarwal's Eye Hospital, 19 Cathedral Road, Chennai, Madras, 600 086, India. agarwal@giasmd01.vsnl.net.in
authors.forename: A
authors.initials: A
authors.lastname: Agarwal
authors.forename: A
authors.initials: A
authors.lastname: Agarwal
authors.forename: T
authors.initials: T
authors.lastname: Agarwal
authors.forename: A
authors.initials: A
authors.lastname: Bagmar
authors.forename: S
authors.initials: S
authors.lastname: Agarwal
mesh_terms: D000328:Adult; D003315:Cornea / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D012086:Reoperation; D012189:Retrospective Studies; D012449:Safety