Thyroid eye disease (TED), also called Graves’ orbitopathy, is an autoimmune condition in which the immune system inflames the muscles and fatty tissue around the eyes. It is usually linked to an overactive thyroid (Graves’ disease) but can occur with normal or low thyroid levels. It makes the eyes look prominent or staring, with lid retraction, redness, watering and sometimes double vision. Specialist management protects sight during the active phase and restores comfort and appearance once it settles — and stopping smoking is one of the most important things you can do.
What thyroid eye disease is
In TED, antibodies that affect the thyroid also target tissues in the eye socket (orbit). The eye muscles and fat swell, pushing the eyes forward (proptosis), pulling the lids back and, in some people, restricting eye movement so the eyes no longer move together. Most cases are mild, but a small number are sight-threatening if the swelling compresses the optic nerve — which is why specialist assessment matters.
Symptoms
- Bulging, prominent or staring eyes (proptosis)
- Upper-lid retraction and a wide-eyed look
- Gritty, dry, watering or red eyes
- Aching behind the eyes, worse on movement
- Double vision from restricted eye muscles
- Rarely, reduced or dimmed vision — a warning sign needing urgent review
The active and stable phases
TED runs in two phases. The active (inflammatory) phase lasts roughly 6 to 24 months, during which symptoms change and the focus is on calming inflammation and protecting the optic nerve. It is followed by a stable (burnt-out) phase, when inflammation has settled and any remaining changes — bulging, lid position or double vision — can be corrected with rehabilitative surgery. Knowing which phase you are in determines the right treatment.
New or worsening eye changes with a thyroid problem? A specialist assessment protects your sight and plans your care.
Book a consultationTreatment options
In the active phase, the aim is to reduce inflammation and protect vision: optimising thyroid control, selenium for mild disease, anti-inflammatory steroid treatment, the targeted antibody therapy Tepezza (teprotumumab) and, in some cases, orbital radiotherapy. Lubricants ease the gritty, dry surface throughout.
In the stable phase, rehabilitative surgery restores comfort, function and appearance, usually in a set order: orbital decompression to ease bulging and protect the nerve, then squint surgery to correct double vision, then eyelid surgery to restore lid position. Our oculoplastic and orbital consultants coordinate the whole pathway.
Frequently asked questions
What causes thyroid eye disease?
It is an autoimmune condition in which antibodies linked to thyroid disease — most often Graves’ disease — inflame the muscle and fat around the eyes. It can occur with an overactive, normal or underactive thyroid. Smoking significantly increases the risk and severity.
Will thyroid eye disease go away on its own?
The active inflammatory phase usually settles over 6 to 24 months, after which the disease becomes stable. Mild cases may need only lubricants and thyroid control, but moderate to severe disease benefits from active treatment, and stable changes can be corrected with surgery.
Can the bulging (proptosis) be corrected?
Yes. Once the disease is stable, orbital decompression surgery creates more space in the eye socket so the eye can settle back, reducing the bulging and protecting the optic nerve. It is the first step of the rehabilitative surgical pathway.
Does smoking affect thyroid eye disease?
Strongly. Smoking makes TED more likely, more severe and less responsive to treatment. Stopping smoking is one of the single most effective things you can do to improve the course of the disease.
When is thyroid eye disease an emergency?
Sudden loss or dimming of vision, loss of colour vision, or severe pain can signal optic-nerve compression and need urgent specialist or emergency review the same day. Most TED is not an emergency, but these red-flag symptoms should never be ignored.