The white of the eyes of newborns does not present pure white, but presents a greenish color, because the wall of the newborn’s eyeball is very thin, can see part of the choroid and other pigment membrane color, so it presents a slightly greenish white. Normal adult white of the eye is white in most cases, the following situations when the white of the eye shows dark yellow: 1, severe hepatitis patients with abnormal liver function, resulting in metabolic waste deposited on the surface of the eye, the formation of dirty, dark yellow color, the white of the eye does not look so white. 2, prolonged smoking, prolonged smoking will lead to dark eye wall. 3, prolonged ultraviolet irradiation may lead to the emergence of blepharoplakia, so that the wall of the eye looks yellow. wall of the eyeballs look yellowish.