王藹侯Lieu, June-ChiangJune-ChiangLieuKo, Liang-ShiLiang-ShiKoWang, Ai-HouAi-HouWang2009-02-122018-07-122009-02-122018-07-121990http://ntur.lib.ntu.edu.tw//handle/246246/131234en-USVarious C Letters in Testing Visual Acuity Thesehold