Thyroid Eye Disease (TED) is an autoimmune inflammatory disorder that affects the orbit of the eye. TED is mainly seen in patients with an overactive thyroid (hyperthyroidism) caused by Graves’ disease. About 20-25% of people with Graves’ disease develop TED either before, during or after their thyroid disorder is diagnosed. More rarely it can occur in people with an underactive thyroid (hypothyroidism) or even when their thyroid is functioning normally. 

These are the most common symptoms of TED:

  • Redness of the eye(s)or eyelid(s)
  • Swelling or feeling of fullness in one or both upper eyelids
  • Puffiness around the eyes
  • Eyes that seem to be too wide open (staring or bulging eyes known as proptosis)
  • Pain in or behind the eyes
  • Gritty eyes
  • Sensitivity to light
  • Blurred vision or double vision

You should see your doctor if you have any of these symptoms and ask whether it could be TED.

See our Thyroid Eye Disease Early Warning Card