Coordinated Health


Chemosis is swelling of the tissue that lines the eyelids and surface of the eye (conjunctiva).

Alternative Names

Fluid-filled conjunctiva; Swollen eye or conjunctiva


Chemosis is a sign of eye irritation. The outer surface of the eye looks like it has fluid in it. Often, the eye area swells so much that you can’t close your eyes properly.

Chemosis is often related to allergies or an eye infection. Chemosis can also be a complication of eye surgery, or it may occur from rubbing the eye too much.

Common Causes

  • Angioedema
  • Allergic reaction
  • Bacterial infection (conjunctivitis)
  • Viral infection (conjunctivitis)

Home Care

Over-the-counter antihistamines and cool compresses placed on the eyes may help relieve symptoms due to allergies.

If symptoms continue, or if you have a painful and red eye, see your health care provider.

Call your health care provider if

Call your health care provider if:

  • Your symptoms do not go away
  • You have other symptoms, such as eye pain, change in vision, difficulty breathing, or fainting

What to expect at your health care provider’s office

The health care provider will perform a physical exam and ask questions about your symptoms, which may include:

  • When did it start?
  • How long does the swelling last?
  • How bad is the swelling?
  • How much is the eye swollen?
  • What, if anything, makes it better or worse?
  • What other symptoms do you have? (For example, breathing problems)

Your health care provider may prescribe an eye medication to reduce swelling and treat any conditions that may be causing the chemosis.