title: [Rebound tonometry and applanation tonometry during narcosis investigation of pediatric glaucoma].
abstract: BACKGROUND
  A comparison of intraocular pressure (IOP) in cases of infantile glaucoma during general anesthesia was carried out by measurement with the iCare rebound tonometer (RBT) and a handheld applanation tonometer (Perkins).
  
  
  METHODS
  A total of 45 eyes from pediatric patients with childhood glaucoma were included in this prospective trial. Bland-Altman plots and linear regression were used for statistical analysis.
  
  
  RESULTS
  In almost two thirds of the eyes the difference between RBT and Perkins was 2 mmHg or less. A systemic bias of 1.96 mmHg and a 95% confidence interval of -3.35 to 7.26 was detected. Linear regression of the Bland-Altman data showed a proportional error (gradient=0.16; r(2)=0.23; p<0.01).
  
  
  CONCLUSIONS
  The iCare rebound tonometer is useful during general anesthesia in cases of childhood glaucoma. It provides comparable IOP values to applanation tonometry with a tendency to record higher values.
authors.affiliation: Zentrum für Augenheilkunde, Universität zu Köln, Joseph-Stelzmann-Straße 9, 50931, Köln, Deutschland. andre.rosentreter@googlemail.com
authors.forename: A
authors.initials: A
authors.lastname: Rosentreter
authors.forename: A M
authors.initials: AM
authors.lastname: Schild
authors.forename: A
authors.initials: A
authors.lastname: Lappas
authors.forename: G K
authors.initials: GK
authors.lastname: Krieglstein
authors.forename: T S
authors.initials: TS
authors.lastname: Dietlein
mesh_terms: D000768:Anesthesia, General; D002386:Cataract / Q000151:congenital / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D004867:Equipment Design; D005260:Female; D005901:Glaucoma / Q000151:congenital* / Q000175:diagnosis*; D006801:Humans; D007429:Intraocular Pressure; D016014:Linear Models; D008297:Male; D008365:Manometry / Q000295:instrumentation*; D011446:Prospective Studies; D012680:Sensitivity and Specificity