In general, yellow eyes may be caused by jaundice, medication factors, lifestyle habits and other problems. 1. Jaundice: When the amount of bilirubin formed in the body exceeds the liver’s ability to process bilirubin, a large amount of unbound bilirubin will gather in the blood. The sclera has more elastic scleroprotein, which has strong affinity with bilirubin, so when bilirubin rises to a certain level, it will be the first to combine with bilirubin, resulting in jaundice, which will lead to the phenomenon of yellow eyes. 2. Drug factors: long-term use of drugs containing yellow pigments may lead to scleral yellowing, resulting in yellow eyes, such as lutein, 3-carotene and so on. 3. Lifestyle habits: short-term consumption of large quantities of oranges, carrots and other yellow fruits may cause yellowing of the sclera. Factors such as fasting, drinking, exertion and staying up late may also induce scleral yellowing, resulting in yellow eyes. In addition, it is recommended that patients with yellow eyes go to the hospital in time to avoid delay.