Well, in my opinion, thyroid problems cannot cause yellow eyes. And if you have yellow eyes, it may be caused by some other reasons. Yellow eyes occur when the whites of the eyes (sclerae) take on a yellowish tinge. Also known as scleral icterus, yellow eyes are generally a sign of jaundice caused by a buildup of bilirubin in the blood. Generally speaking, there are many factors which can just lead to yellow eyes. For example, as well as yellowing of the skin, it occurs in children and adults when bilirubin builds up due to serious diseases and conditions that cause liver damage or dysfunction, or block the bile ducts. So for your situation, you need to go and see the eye doctor as soon as possible.