Analysis of reading behavior of low vision with close reading distance

本研究旨在探讨低视力儿童阅读行为的特点，并从低视力儿童使用电子教材的角度探讨结果。研究了不考虑阅读距离对打印尺寸偏好的PC显示器恒定对比度的影响，并比较了使用印刷品和使用平板电脑时的阅读距离和头、眼、手的运动。结果显示，低视力人群在平板电脑上的阅读行为与在印刷品上的阅读行为并无差异。这意味着阅读电子教科书将与阅读传统教科书没有什么不同。此外，电子教科书的两个优点被考虑。一个是较小的打印尺寸可以接受，因为平板电脑显示器的对比度是恒定的。另一个优点是可以很容易地改变平板电脑显示器的对比度。

The purpose of this study was to investigate the characteristics of reading behavior of low visions and to discuss the results from the standpoint of using electronic textbook for low vision. The effect of a constant contrast of a PC display regardless of reading distance for preference of print size was examined and reading distance and movements of head, eye and hand when using printed matter and a tablet PC were compared. As a result, the reading behavior of low visions on the tablet PC was not differed from that on the printed matter. It means that reading electronic textbooks will be not differed from reading conventional textbooks. In addition, two advantages of electronic textbooks were considered. One is smaller print size will be acceptable as contrast of a tablet PC display is constant. Another is that it is very easy to change contrast polarity of a tablet PC display.