# Thyroid Eye Disease: Symptoms, Stages and Treatment URL: https://thethyroidologist.com/blog/thyroid-eye-disease-guide/ Published: 2025-11-14 Author: The Thyroidologist Editorial Team Medical reviewer: Thyroid Specialist > Thyroid eye disease can affect the eyes even when thyroid levels are normal. Recognise the symptoms, understand the stages and know when to seek urgent help. Thyroid eye disease — also called Graves' orbitopathy — is an autoimmune condition affecting the tissues around the eyes. It is most often associated with Graves' disease, but it can occur with other thyroid conditions or even with normal thyroid function. ## What happens in the eye The immune system attacks the fat and muscle behind the eye, causing inflammation and swelling. This can push the eyeball forward (bulging), restrict eye movement (double vision) and affect the eyelids. The condition typically has an **active phase**, lasting months to a couple of years, followed by a **stable phase** in which inflammation settles but changes may remain. ## Symptoms to recognise - Bulging or a "staring" appearance - Dryness, grittiness or a feeling of sand in the eyes - Redness, watering or sensitivity to light - Puffy eyelids or retraction of the upper lid - Double vision, especially when looking up or sideways - Pain or pressure behind the eye Symptoms can be mild and cosmetic, or severe and sight-threatening. ## Why thyroid control matters Thyroid eye disease can worsen when thyroid function is unstable. Keeping levels stable — neither over- nor under-replaced — is important. However, treating the thyroid does not automatically treat the eyes, because the eye disease has its own course. Radioactive iodine can worsen active eye disease, so the thyroid treatment choice is made with the eyes in mind. ## Smoking is the biggest risk factor Smoking substantially worsens the course of thyroid eye disease and reduces the effectiveness of treatment. Stopping smoking is the single most important thing a person can do to protect their eyes. ## Treatment by severity ### Mild disease Lubricating eye drops, sleeping with the head raised, avoiding smoke and regular review are usually enough. Selenium has some evidence for mild cases and may be discussed with your clinician. ### Moderate to severe disease Steroids, other immunosuppressive medicines, targeted therapies and sometimes radiotherapy are used to control active inflammation. These decisions are made by a specialist eye team. ### Stable disease Surgery can correct bulging (orbital decompression), double vision (strabismus surgery) or eyelid position once the disease has stabilised. ## When to seek urgent help Go to emergency care if you have: - Sudden loss or blurring of vision - Severe eye pain - Rapidly worsening double vision - Inability to close the eye with redness or ulceration These can indicate optic nerve compression or corneal damage and need urgent assessment. ## The bottom line Thyroid eye disease is variable but treatable. Early specialist involvement, stable thyroid function and stopping smoking give the best chance of protecting your eyes. If you notice bulging, double vision or persistent eye irritation with a thyroid condition, ask for an eye assessment. ## References & further reading - [Graves’ disease — NHS](https://www.nhs.uk/conditions/graves-disease/) - [Graves’ eye disease — American Thyroid Association](https://www.thyroid.org/graves-disease/) --- Part of The Thyroidologist — https://thethyroidologist.com The content on this website is for general educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your specific condition.