title: Comparative study of two silicone hydrogel contact lenses used as bandage contact lenses after LASEK.
abstract: OBJECTIVE
  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.
authors.affiliation: Vissum Madrid, Madrid, Spain. raquelgil@cnoo.es
authors.forename: Raquel
authors.initials: R
authors.lastname: Gil-Cazorla
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Teus
authors.forename: Jose L
authors.initials: JL
authors.lastname: Hernández-Verdejo
authors.forename: Laura
authors.initials: L
authors.lastname: De Benito-Llopis
authors.forename: Monsterrat
authors.initials: M
authors.lastname: García-González
mesh_terms: D000328:Adult; D001458:Bandages; D003263:Contact Lenses, Hydrophilic; D019573:Epithelium, Corneal / Q000502:physiology; D006801:Humans; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D049008:Keratectomy, Subepithelial, Laser-Assisted; D054018:Lasers, Excimer / Q000627:therapeutic use*; D009216:Myopia / Q000601:surgery*; D010100:Oxygen / Q000378:metabolism; D017060:Patient Satisfaction; D011446:Prospective Studies; D012029:Refraction, Ocular / Q000502:physiology; D012828:Silicones; D011795:Surveys and Questionnaires; D014792:Visual Acuity / Q000502:physiology; D014945:Wound Healing / Q000502:physiology*
chemical_list: D012828:Silicones; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D010100:Oxygen