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Clinical evaluation of hand-held pneumatic tonometer Tono-Pen Ⅱ Jun Kozaki 1 , Masamitsu Takeuchi 1 , Mutsuhiko Nishikawa 1 , Nahoko Ogata 1 , Kazuya Yamagishi 1 , Hirohiko Miki 1 1Dept of Ophthalmol Kansai Med Univ pp.1125-1127
Published Date 1991/7/15
DOI https://doi.org/10.11477/mf.1410908367
  • Abstract
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 We evaluated the feasibility of a handheld applanation tonometer Tono-Pen Ⅱ developed by Bio-Rad. Tonometric readings were compared withthose by Goldmann applanation tonometer. Measurements in 205 eyes gave 16.9±5.1 mmHg forGoldmann tonometer and 16.8±6.8 mmHg for Tono-Pen Ⅱ. There were good correlations between thetwo readings (r=0.85). The incidence for falsenegative and false positives was 2.4% and 4.4%respectively. The mean error was 2.27 mmHg.

 Tono-Pen Ⅱ proved thus to be reasonably accurate for clinical use. As minor drawbacks, it israther difficult to use in darkroom and is expensive. It is lightweight, small, and can be used to patientsin any body position.


Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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