1) Thyroid eye disease (TED) is an autoimmune disorder associated with Graves' disease. It can affect the eye muscles, fatty tissue, and optic nerve. 2) Treatment depends on the severity and activity of TED. Mild and inactive cases may only require monitoring. Moderate to severe or active cases are treated with intravenous steroids, radiation therapy, or surgery. 3) Sight-threatening TED requires immediate treatment such as steroids or orbital decompression to reduce pressure on the optic nerve. Rehabilitative surgery can help with functional issues from TED.