Yellowing of the eyeballs may be caused by nevus of conjunctival pigmentation, chronic conjunctivitis, jaundice, etc. It may also be related to physiological factors. Conjunctival pigmented nevus is caused by congenital developmental abnormality, which usually forms a yellow patch in the white eyeball area of the patient. It usually does not jeopardize the health of the eyes or affect the patient’s vision, and usually does not require treatment. If the patient feels that it affects his or her appearance, it can be surgically removed. Chronic conjunctivitis, on the other hand, can be caused by inflammation and stimulation leading to pigmentation in the conjunctival tissue, resulting in yellowing of the eyes. Patients can follow the doctor’s instructions to use tobramycin eye drops and other medications to control the inflammation and alleviate the discomfort of the eyes. Jaundice is caused by elevated bilirubin in the body due to liver, gallbladder, pancreas or blood disorders. Deposition of bilirubin in the eyes will cause yellowing of the patient’s eyes, which requires medical treatment to remove the primary disease in order to eliminate the symptoms. In addition, if the patient consumes a lot of carrots, oranges and other foods, may also appear in the yellowing of the eyes. It is recommended that patients with obvious yellowing of the eyes should consult a hospital in time to assess their condition and follow the doctor’s instructions for treatment.