Sanpaku
Sanpaku (三白; lit. 'three whites') or sanpaku gan (三白眼; Chinese: 三白眼; pinyin: Sānbáiyǎn; lit. 'three-white eyes') is a Japanese term referring to a person with visible sclera on three sides of their irises: the normal left and right, plus above or below. The term is most often used in English to refer to a folk belief whereby it functions as an omen or symptom in alternative medicine.