What is thyroid eye disease?
In short
- Inflammation of the muscles, lids and tissues around the eye, usually with an overactive thyroid. Watering, gritty, staring or bulging eyes and double vision. The active stage lasts six months to two years.
- Watering, gritty, sore eyes and discomfort in bright light, from inflammation and dry eye.
- Have symptoms checked early, because the active stage sometimes needs treatment.
Also called: TED, Graves' eye disease, Graves' ophthalmopathy
- Part of the eye
- Eye socket and lids
- Group
- Specialist care
- Vision functions involved
- Light and glare, Alignment and depth
- Main source
- RNIB
Thyroid eye disease inflames the eye muscles, eyelids, tear glands and soft tissues in the eye socket. It most often comes with an overactive thyroid caused by Graves' disease, where the antibodies which drive the thyroid also attack the tissue behind the eyes. The active stage of swelling lasts about six months to two years and then burns out. It may also be called thyroid associated ophthalmopathy, thyroid orbitopathy or Graves' orbitopathy.
Ophthalmologist
A medical doctor who specialises in eye conditions and their treatment. Glossary entry
Ophthalmologist
A hospital doctor who specialises in eyes. Glossary entry
How thyroid eye disease can affect day-to-day life
You may recognise some of these situations, or none of them. The point is to find help with the things you want to do.
Mornings
Puffy, red, watering eyes which look worse first thing.
Sleep with an extra pillow, cool compresses and lubricating drops before the day starts.
Double vision at the edges
Looking up or to the side splits the image.
Ask about prisms on your glasses or a patch for tasks. Tell DVLA if double vision affects driving.
Changes you may notice
- Watering, gritty, sore eyes and discomfort in bright light, from inflammation and dry eye.
- Puffy red lids, especially in the morning, an upper lid which sits higher giving a staring look, eyes pushed forward, aching sockets, and double vision in some or all directions.
Everyone is different. Symptoms on their own cannot identify a condition.
What to do about a new or sudden changeAssessment and care
Have symptoms checked early, because the active stage sometimes needs treatment. For most people treatment is lubricating drops for dry eye and help with double vision, often prisms. Where sight is at risk, the ophthalmologist may use steroids or other immunosuppressants, orbital radiotherapy or, rarely, emergency surgery to make room in the eye socket. After the active stage, surgery can correct lid position, eye position and double vision if needed. An endocrinologist manages the thyroid alongside.
How vision is affected
These topics explain the parts of vision involved. They do not predict your sight, diagnose anything or show the condition itself.
Light and glare
Glare can be uncomfortable and can wash out detail. Where the light comes from matters as much as how much light there is.
Open the light and glare labAlignment and depth
Your brain combines the view from each eye with perspective, size and movement. Judging depth uses several clues at once.
Open the alignment and depth labEveryday support
If you smoke, stopping is the single most useful thing you can do: smoking makes thyroid eye disease worse. Use lubricating drops often, sleep with the head raised to reduce morning puffiness, and wear sunglasses for light and wind. Tell the eye team at once about any change in colour vision or dimming. Changes to your appearance are hard; ask about support and about the surgery available once the inflammation has settled.
Driving: you must tell DVLA about an eye condition which affects both eyes, or your only seeing eye. Driving and your eyesight
Common questions
Will my eyes go back to normal?
For most people the disease is mild. Symptoms often get worse for six months to a year and then settle, though it can take up to two years for the inflammation to go completely. The longer the active stage, the less likely the appearance returns fully to normal, and double vision can persist.
When is thyroid eye disease an emergency?
If the sight blurs or dims, colours look washed out, or the side vision closes in, get medical attention straight away. These can mean pressure on the optic nerve, which is rare but needs urgent treatment.
Does it only happen with an overactive thyroid?
Most often, usually with Graves' disease, but it can also occur with an underactive thyroid or a thyroid which is working normally.
A question to take to your appointment
Is the disease still active, is my optic nerve safe, and what can be done about the double vision and the appearance of my eyes now and later?Prepare your appointment checklist
Sources and review status
- Written by
- The Omnirx.io team, from the sources above
- Sources checked
- Page updated
- Next review due
- Clinical review
- Not yet. No clinician has endorsed this page.
- Reading level
- About 18 words a sentence, 264 words of guidance
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Cite this page
Glanced (2026) Thyroid eye disease: what the name means, care and support. Omnirx.io team for Medstack Ltd. Available at: https://www.glanced.co.uk/condition/thyroid-eye-disease/ (Accessed: ). Source checked 4 October 2026.
Educational information. Follow the advice of your own eye-care team.