Posterior corneal surface differences between non-laser in situ keratomileusis (LASIK) and 10-year post-LASIK myopic eyes

M.-L. Dai, Q.-M. Wang, Z.-S. Lin, Y. Yu, J.-H. Huang, G. Savini, J. Zhang, L. Wang, C.-C. Xu

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To evaluate the posterior corneal surface differences between non-laser in situ keratomileusis (LASIK) and 10-year post-LASIK myopic eyes. Methods: The study included 130 eyes from 65 patients, who were treated with myopic LASIK 10 years ago. In addition, 130 eyes from 65 unoperated myopic patients of matching present age and preoperative refraction were divided into control group. Data on the posterior corneal surface and anterior chamber were obtained from Pentacam software and compared between the groups. Postoperative visual acuity (VA) and refractive error were also analysed. Results: The mean preoperative spherical equivalent (SE) was −6.99 ± 1.78 dioptre (D) in the LASIK group. Ten years after surgery, the mean SE was −0.45 ± 1.22 D, the efficacy index was 0.98, and the safety index was 1.01. The posterior corneal elevations of the LASIK group at 2 mm corneal diameter were significantly lower than those of the control group. However, posterior corneal elevations at 6 mm corneal diameter were higher in the LASIK group than the controls (p 
Original languageEnglish
Pages (from-to)e127-e133
JournalActa Ophthalmologica
Volume96
Issue number2
DOIs
Publication statusPublished - 2018

Keywords

  • laser in situ keratomileusis
  • long-term
  • posterior corneal surface
  • safety
  • adult
  • anterior chamber depth
  • anterior chamber volume
  • Article
  • controlled study
  • corneal diameter
  • corrected distance visual acuity
  • cross-sectional study
  • female
  • human
  • keratomileusis
  • major clinical study
  • male
  • myopia
  • population research
  • postoperative period
  • preoperative period
  • priority journal
  • uncorrected distance visual acuity
  • visual acuity
  • visual system parameters
  • anterior eye chamber
  • comparative study
  • cornea endothelium
  • cornea stroma
  • excimer laser
  • eye refraction
  • follow up
  • middle aged
  • pathophysiology
  • physiology
  • procedures
  • therapeutic use
  • Adult
  • Anterior Chamber
  • Corneal Stroma
  • Cross-Sectional Studies
  • Endothelium, Corneal
  • Female
  • Follow-Up Studies
  • Humans
  • Keratomileusis, Laser In Situ
  • Lasers, Excimer
  • Male
  • Middle Aged
  • Myopia
  • Refraction, Ocular
  • Visual Acuity

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