Thyroid eye disease is a condition that is also known as Graves' eye disease. The condition occurs when the immune system attacks the muscles and tissues surrounding the eyes. Some people refer to it as Graves' ophthalmopathy or orbitopathy. Other synonyms for the condition include Graves' disease of the eye, dysthyroid orbitopathy, or Graves' ophthalmology. Symptoms of the condition include bulging eyes, double vision, blurry vision, and dry eyes. Treatment for thyroid eye disease includes medication to manage the symptoms, surgery to correct any disfigurement, or a combination of both. Overall, early diagnosis and treatment can help prevent the condition from worsening and reduce the risk of complications.