Wu Collection, Middle Volume
Radical: Eye (mù)
Character: Mang
Kangxi strokes: 8
Page 800, Entry 02
Collected Rimes (Jiyun): Pronounced mang. Mangyang, the appearance of looking upward. Also pronounced pang. Also pronounced wang. The meaning is the same.
Corrected Character Compendium (Zhengzitong): A common variant of the character for blind, composed of the characters for vanish and eye, meaning to lose one's sight. How could one possibly look upward?