Graves' ophthalmopathy (also known as
thyroid eye disease (
TED),
dysthyroid/thyroid-associated orbitopathy (
TAO),
Graves' orbitopathy) is an
autoimmune inflammatory disorder affecting the
orbit around the eye, characterized by upper eyelid retraction,
lid lag, swelling (
edema), redness (
erythema),
conjunctivitis, and bulging eyes (
proptosis).