It cannot be emphasised too strongly how important it is that patients with TED see an eye specialist who has a special interest and expertise in the disease.
Specific tests are needed in TED in order to fully assess the state of the eyes and the thyroid status. These may include:
Field of vision test ('a field test', for example with a Humphrey machine) CT or MRI of orbits (specialised X-ray or scans to look at the tissues around the eyes)
Enlarged muscle on left side compared to the right on an MRI scan