title: [Evaluation of accuracy of measuring intraocular pressure by handheld non-contact applanation tonometer].
abstract: OBJECTIVE
  To evaluate the accuracy of measuring intraocular pressure by handheld non-contact applanation tonometer.
  
  
  METHODS
  58 patients' (113 eyes) intraocular pressure were measured by Keeler, non-contact tonometer and R 900 Goldmann applanation tonometer and the results of measurement of intraocular pressure by the two kinds of tonometers were compared.
  
  
  RESULTS
  The mean intraocular pressure measured by non-contact is 16.31 +/- 5.59 mmHg and 17.49 +/- 6.13 mmHg (1 mmHg = 0.1333 kPa) by Goldmann applanation tonometer, respectively. There was no statistical significance to be found (P > 0.05) between the two methods. By linear correlation and regression analysis, a positive correlation was found between the two methods (r = 0.8942, b = 0.8154).
  
  
  CONCLUSIONS
  The handheld non-contact tonometer has the same accuracy and reliability of measurement of intraocular pressure comparing with Goldmann applanation tonometer, and it can be used in glaucoma clinic and screening.
authors.affiliation: Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou, China.
authors.forename: X
authors.initials: X
authors.lastname: Chen
authors.forename: D
authors.initials: D
authors.lastname: Peng
authors.forename: W
authors.initials: W
authors.lastname: Zhou
authors.forename: Y
authors.initials: Y
authors.lastname: Zhong
mesh_terms: D005069:Evaluation Studies as Topic; D005901:Glaucoma / Q000503:physiopathology; D006801:Humans; D007429:Intraocular Pressure; D012680:Sensitivity and Specificity; D014065:Tonometry, Ocular / Q000379:methods / Q000592:standards*