Laser in situ keratomileusis retreatment for residual myopia and astigmatism

J Refract Surg. 2000 Mar-Apr;16(2):170-6. doi: 10.3928/1081-597X-20000301-10.


Purpose: To evaluate the visual and refractive results of laser in situ keratomileusis (LASIK) retreatment on eyes with residual myopia with or without astigmatism.

Methods: LASIK retreatment was performed on 35 eyes of 23 patients for correction of residual myopia, with or without astigmatism, with a mean manifest spherical equivalent refraction of -2.17+/-0.82 D (range, -1.00 to -3.87 D) and mean refractive astigmatism of -0.55+/-0.61 D (range, 0 to -1.75 D). Retreatment was performed 3 to 18 months after primary LASIK (mean, 5.1+/-2.6 mo). The corneal flap of the previous LASIK was lifted and laser ablation was performed using the Chiron-Technolas Keracor 116 excimer laser. Follow-up was 12 months for all eyes.

Results: At 1 year after retreatment, manifest spherical equivalent refraction was reduced to a mean -0.23+/-0.28 D (range, 0 to -0.87 D), and refractive astigmatism was reduced to a mean -0.16+/-0.25 D (range, 0 to -0.75 D). Thirty-two eyes (91.5%) had a manifest spherical equivalent refraction within +/-0.50 D of emmetropia, and 33 eyes (94.3%) had 0 to 0.50 D of refractive astigmatism. Uncorrected visual acuity was 20/20 or better in 11 eyes (31.4%). Spectacle-corrected visual acuity was not reduced in any eye after retreatment. There were no significant complications.

Conclusion: LASIK retreatment was effective for correction of residual myopia or astigmatism after primary LASIK. Refractive results were predictable with good stability after 3 months. Lifting the flap during LASIK retreatment was relatively easy to perform and did not result in visual morbidity in eyes treated from 3 up to 18 months after primary LASIK.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Astigmatism / pathology
  • Astigmatism / surgery*
  • Cornea / pathology
  • Cornea / surgery*
  • Humans
  • Keratomileusis, Laser In Situ*
  • Middle Aged
  • Myopia / pathology
  • Myopia / surgery*
  • Patient Satisfaction
  • Refraction, Ocular
  • Reoperation
  • Retrospective Studies
  • Surveys and Questionnaires
  • Treatment Outcome
  • Visual Acuity