Visibility Evaluation of Characters on Liquid Crystal Displays in Mobile Phones, and Visual Function

  • Masako Omori
  • Satoshi Hasegawa
  • Kazuhiro Fujikake
  • Masaru Miyao
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4558)


The purpose of this study was to examine the relationships between the visibility of mobile phone displays and aging effects on subjects’ visual functions, based on measurements of vision, including near visual acuity and cataract cloudiness. In the relation between Character size, CC, and NVA, visibility was lower with smaller character size “S”. In the relation between Contrast, CC, and NVA, the organoleptic evaluations showed significant differences in contrast. The subjects’ attached a high value to the negative display mode, especially when the subject’s CC was more than 200. Such considerations are particularly important for elderly users who have marked deterioration of visual function.


mobile phone cataract cloudiness near visual acuity character size contrast visibility elderly people 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Masako Omori
    • 1
  • Satoshi Hasegawa
    • 2
  • Kazuhiro Fujikake
    • 3
  • Masaru Miyao
    • 4
  1. 1.Faculty of Home Economics, Kobe Women’s University, Suma-ku KobeJapan
  2. 2.Department of Information Culture, Nagoya Bunri University, Inazawa AichiJapan
  3. 3.Graduate School of Information Science, Nagoya University , Chikusa-ku NagoyaJapan
  4. 4.Information Technology Center, Nagoya University , Chikusa-ku NagoyaJapan

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