Well, yes, thyroid diseases can lead to a lot of eye problems. for example, it can cause dark circles under your eyes. As we know that thyroid disease is a thyroid hormone deficiency disease. And it may occur at any age and is common in older adults. because this kind of disease can cause an infiltration of complex sugar molecules in your face, which leads to swelling and discoloration in your face and around your eyes. and then the dark circles can occur. And the swelling eyes can occur too. to treat your situation, you can eat more fruits and vegetables and it can be effective. anyway, you can also console it with your doctor.