title: [Quantification of corneal opacity after refractive corneal surgery using the anterior segment analyzer].
abstract: OBJECTIVE
  We quantified normal clear and postoperative hazed corneas using the Scheimpflug image of Pentacam, an anterior segment analysis system by Oculus.
  
  
  METHODS
  We measured 77 eyes with normal clear corneas, and analyzed 48 eyes in 2 groups before and 1, 4, and 12 weeks after undergoing LASIK (24 eyes) or Epi-LASIK (24 eyes).
  
  
  RESULTS
  Clear corneas averaged a level of 30.9 +/- 2.4(mean +/- standard deviation) and showed no correlation with gender or age. At 1 week after Epi-LASIK and LASIK, the 2 surgery groups averaged a level of 41.0 +/- 8.1 and 31.9+/- 2.5 respectively. Epi-LASIK demonstrated a statistically significantly higher level than LASIK (Student's t-test, p < 0.01), whereas no difference was observed between the 2 groups at 4 and 12 weeks after surgery.
  
  
  CONCLUSIONS
  Pentacam is useful in quantifying corneal haze following excimer laser keratectomy.
authors.affiliation: Department of Ophthalmology, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan. jmatsuda@ophth.kpu-m.ac.jp
authors.forename: Jumpei
authors.initials: J
authors.lastname: Matsuda
authors.forename: Osamu
authors.initials: O
authors.lastname: Hieda
authors.forename: Shigeru
authors.initials: S
authors.lastname: Kinoshita
mesh_terms: D000293:Adolescent; D000328:Adult; D003318:Corneal Opacity / Q000175:diagnosis*; D003720:Densitometry; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D054140:Refractive Surgical Procedures