Analysis and Development of Computer Fonts Easy to See for Children with Low Vision.

这是一个为期三年的研究项目，旨在分析可以方便地在教育环境中使用的计算机字体，同时，对于弱视儿童来说也很容易看到。在此基础上，对字体进行了实验开发。本文从三种不同的方法进行了研究：a .模拟低视力条件下的字体分析：模拟对比度敏感度的下降及其对阅读效率的影响。对比敏感度的下降是由白内障和角膜白斑等疾病引起的混浊的眼介质引起的，它导致了视觉障碍。我们制作了一个检查表来评估对比敏感度的模拟下降。b .影响低视力儿童阅读的因素分析：字体并不是影响低视力儿童阅读效率的唯一因素。除非明确其他因素，否则无法指定字体的影响。因此，我们考察了不同的字体大小和呈现条件（如一行的长度）对阅读效率的影响。c .低视力儿童阅读效率测量的研究：考察了不同的测量字体对阅读效率影响的方法。因此，为了进行有效的评估，在实验的基础上，开发了一种新的基于计算机的评估系统来测量低视力人群的阅读效率。经过试验，对该系统进行了改进。

This was three-year research project aiming at the analysis of computer fonts that can be used conveniently in educational setting and, at the same tim, are easy to see for children with low vision. Based on the analysis, fonts were developed on an experimental basis.The research was carried out from three different approaches.A.Analysis of fonts through simulated condition of low vision :The decline in contrast senditivity was simulated and its effect on reading efficiancy was examined. The decline in contrast sensitivity is caused by cloudy ocular media due to such disease cataract and corneal leukoma and it results in the impediment to visibility. A checklist was mede to evaluate the simulated decline in contrast sensitivity. Another checklist was also made to evaluate the readability of different fonts.B.Analysis of factors that influence the reading of children with low vision :The font is not the sole factor that influence the reading efficiency in children with low vision. Unless other factors are clarefied, the influence of fonts cannot be specified. For this reason, different font sizes and presentation conditions such as the length of a line were examined to see the effect on reading efficiency.C.Research on the measurement of reading efficiency of children with low vision :Different methods of measuring the influence of fonts on the efficiency of reading were examined. As a result, in order to make effective evaluation, a new evaluation system using computer was developed on an experimental basis to measure the reading efficiency of people with low vision. Improvements were made on the system after trials.