Bulging eyes (exophthalmos)

Bulging eyes (exophthalmos) could be a sign of a problem with your thyroid gland. It can be treated, but get it checked quickly as your vision can be affected.

Check if you have bulging eyes

A close-up of a bulging eye from the side. The eye is sticking out more than usual and a lot of the white of the eyeball is showing.

You may have bulging eyes if:

Any other symptoms you have will depend on what's causing your eyes to stick out, but could include:

Causes of bulging eyes

A common cause of bulging eyes is an overactive thyroid gland (hyperthyroidism).

This is where the thyroid gland (a small gland in your neck), produces too much of the thyroid hormones.

Less common causes of bulging eyes include:

Urgent advice: Ask for an urgent GP appointment or get help from NHS 111 if:

  • you have a bulging eye or bulging eyes

You can call 111 or get help from 111 online.

Immediate action required: Call 999 or go to A&E immediately if:

  • your child's eye or eyes have just started bulging
  • your eye or eyes have started bulging and you have any changes to your vision, like wavy lines, flashing or loss of vision
  • your eye or eyes have started bulging and you have a severe headache and feel sick

Treatment for bulging eyes

Treatment for bulging eyes depends on the cause.

You may need:

If the cause is not clear, a GP may refer you to a specialist and you may need further tests.

Things you can do if you have bulging eyes

If you have bulging eyes, there are things you can do to help ease your symptoms.


  • use pillows to keep your head raised up when lying down

  • wear sunglasses if your eyes are sensitive in bright light

  • if you wear contact lenses, take them out and wear glasses to rest your eyes


  • do not smoke or drink too much alcohol

  • do not spend too long in smoky, dry or dusty places

  • do not spend too long in air conditioned or heated rooms

Page last reviewed: 4 August 2022
Next review due: 4 August 2025