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Japanese

A new illumination device for sight test Chosaburo Haruta 1 , Kenzi Kusunoki 1 , Ken Uyama 1 1Osaka Welfare Pension Hospital. pp.510-513
Published Date 1958/3/15
DOI https://doi.org/10.11477/mf.1410206311
  • Abstract
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1) This device is a smaller one, provided with a three foled screens, which can be opened at an angle of 180° successively,thus permitting to show three different test charts, such as Katakana, Hirakana and Landolt types.

2) The Katakana types have a more accuracy in testing visual acuity. And the Hira-kana types are not so accurate, but most easily read by Japanese school children. So the most satisfactory result will be obtained by utilizing this device in the following manner: Katakana types on the first sheet for the commonest use, Landolt ring or Hirakana types on the second and third sheet when needed.


Copyright © 1958, 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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