Article Text

PDF
Re-treatment after laser in situ keratomileusis for correction of myopia and myopic astigmatism
  1. M A Bragheeth,
  2. U Fares,
  3. H S Dua
  1. Division of Ophthalmology and Visual Sciences, University of Nottingham, Nottingham, UK
  1. Professor H S Dua, Division of Ophthalmology and Visual Sciences, B Floor, Eye Ear Nose Throat Centre, University Hospital, Queen’s Medical Centre, Nottingham NG7 2UH, UK; harminder.dua{at}nottingham.ac.uk

Abstract

Aim: To evaluate the results of laser in situ keratomileusis (LASIK) re-treatment for under correction or regression after primary LASIK procedures for myopia and myopic astigmatism.

Methods: A prospective evaluation of 360 consecutive LASIK-treated eyes, for myopia and/or myopic astigmatism, 32 eyes of 34 patients were retreated and followed at 3, 6 and 12 months post-retreatment. Re-treatment was performed by lifting the original flap after cutting the epithelium around the flap edge with a fine needle. Standard ablation was performed based on the patient’s residual refraction.

Results: 9.4% of eyes required retreatment. Prior to re-treatment the mean manifest spherical equivalent (SE) was −0.99 (SD 1.48) D (range −0.75 to −2.63). The mean sphere was −0.79 (1.20) D (range −2.50 to −0.50), and the mean cylinder was −0.90 D (1.14) D (from −2.75 to 1.25). At 1-year follow-up 56% of the eyes were within ±0.50 D SE, and 78% were within ±1.00 D SE. 78% of the eyes examined at 1-year post-re-treatment managed unaided vision of 6/9 or better. Peripheral epithelial ingrowth not requiring treatment developed in two eyes. Second re-treatment for regression was performed in one eye. A significant correlation was found between the refractive regression and each of the following: preoperative refraction, attempted correction and ablation depth.

Conclusion: LASIK re-treatment for residual myopia, by lifting the original flap, is an effective option. Refractive results are fairly predictable, and refraction stabilises by 3 months after re-treatment. Lifting the corneal flap after cutting the epithelium on the flap edges is easy to perform and has a very low incidence of epithelial ingrowth.

Statistics from Altmetric.com

Footnotes

  • Competing interests: None.

  • Ethics approval: Ethics approval was provided by Nottingham local ethics committee.

  • Patient consent: Obtained.

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

Linked Articles

  • At a glance
    Harminder S Dua Arun D Singh