Comparative study of two silicone hydrogel contact lenses used as bandage contact lenses after LASEK

Raquel Gil-Cazorla*, Miguel A. Teus, Jose L. Hernández-Verdejo, Laura De Benito-Llopis, Monsterrat García-González

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

PURPOSE.: To evaluate two silicone hydrogel contact lens materials as continuous-wear bandage contact lenses after laser-assisted subepithelial keratomileusis (LASEK). METHODS.: The inclusion criteria were myopia of -6.00 diopters (D) or less, astigmatism lower than -1.5 D, bilateral best-corrected visual acuity of 20/20 or better, and candidates for bilateral LASEK. The patients were randomized to be fitted with a Balafilcon A (PureVision) lens in one eye and Galyfilcon A (Acuvue Advance) in the fellow eye. Uncorrected visual acuity, corneal epithelial status, conjunctival and limbal hyperemia, lens movement, contact lens debris, and the responses to a subjective-comfort questionnaire were assessed postoperatively. The parameters were evaluated before and 1 and 5 days after the procedure. A paired Student's t-test and chi-square tests were used when appropriate. RESULTS.: We analyzed 44 eyes of 22 consecutive patients who underwent LASEK to correct low-to-moderate myopia. The mean spherical equivalent was -3.25 ± 2.36 D. There was no difference in conjunctival or limbal hyperemia, lens movement, uncorrected visual acuity, or epithelial healing between the two lenses at any visit. A significant difference was found in lens deposition and discomfort, which were greater with the PureVision lens 5 days postoperatively (p = 0.01 for both comparisons). CONCLUSIONS.: PureVision and Acuvue Advance contact lenses seem to be useful as continuous wear bandage contact lenses. There is no major clinical difference between the lenses, although patients report greater comfort with Acuvue Advance.

Original languageEnglish
Pages (from-to)884-888
Number of pages5
JournalOptometry and Vision Science
Volume85
Issue number9
DOIs
Publication statusPublished - 1 Sep 2008

Keywords

  • Epithelium healing
  • LASEK
  • Oxygen permeability
  • Silicone hydrogel contact lenses
  • Therapeutic bandage contact lenses

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