title: The interoccasion repeatability of intraocular pressure measurement using the Tono-Pen in a sample of school-aged children.
abstract: OBJECTIVE
  The purpose of this study was to assess the interoccasion repeatability of the Tono-Pen XL portable applanation tonometer in school-aged children.
  
  
  METHODS
  Thirty-one normal children were recruited from The Ohio State College of Optometry Pediatric Clinic. They ranged in age from 6 to 14 years. Intraocular pressure was measured using the Tono-Pen XL in both eyes of all subjects on two different occasions within a median of 9 days. Refractive error was measured by noncycloplegic autorefraction. Data from right eyes only are presented.
  
  
  RESULTS
  There was no average difference in the intraocular pressure between occasions. The 95% limits of agreement between occasions were -5.58 to 4.87 mm Hg.
  
  
  CONCLUSIONS
  The Tono-Pen XL gives reasonably repeatable readings between occasions in school-aged children.
authors.affiliation: The Ohio State University College of Optometry, Columbus 43210, USA.
authors.forename: K M
authors.initials: KM
authors.lastname: Khamees
authors.forename: K
authors.initials: K
authors.lastname: Zadnik
mesh_terms: D000293:Adolescent; D002648:Child; D006801:Humans; D007429:Intraocular Pressure; D012030:Refractive Errors / Q000175:diagnosis; D015203:Reproducibility of Results; D014065:Tonometry, Ocular / Q000592:standards*