Wu Collection, Middle Volume
Radical: Eye (mù)
Entry: xuan
Kangxi strokes: 20
Page 820, Entry 19
Guangyun (Broad Rhymes) and Jiyun (Collected Rhymes) record it as pronounced xuan. According to the Bow ya (Extensive Refinements), it means to look. According to the Yupian (Jade Chapters), it means to stare directly. From the essay by Zhang Zhihe, On the Yu-Zhuo (Yue-Zhuo pian): Staring with eyes fixed and examining the pupils.
Also, according to the Guangyun, pronounced xu (falling tone); according to the Jiyun, pronounced xu (falling tone); according to the Zhengyun (Correct Rhymes), pronounced hu (falling tone). The meaning is the same.
Also, according to the Jiyun, pronounced xuan (falling tone). The form xuan-xuan refers to eyes that are not looking straight. From the Rhapsody on the Lingguang Hall of Lu (Lu lingguang dian fu) by Wang Yanshou: The eyes are unfocused and lose their luster.