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Chemosis is swelling of the tissue that lines the eyelids and surface of the eye (conjunctiva).
Fluid-filled conjunctiva; Swollen eye or conjunctiva
Chemosis is a sign of eye irritation. The outer surface of the eye (conjunctiva) may look like a big blister. It can also look like it has fluid in it. When severe, the tissue 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.
Over-the-counter antihistamines and cool compresses placed on the eyes may help with symptoms due to allergies.
Call your health care provider if:
The health care provider will perform a physical exam and ask questions about your symptoms, which may include:
Your health care provider may prescribe eye medication to reduce swelling and treat any conditions that may be causing the chemosis.
Chapin MJ, Wun PJ, Abelson MB. Mediators of ocular inflammation. In: Tasman W, Jaeger EA, eds. Duane's Foundations of Clinical Ophthalmology. 2012 ed. Philadelphia, Pa: Lippincott Williams & Wilkins; 2013:vol. 2, chap 27.
Karesh JW, On AV, Hirschbein MJ. Noninfectious orbital inflammatory disease. In: Tansman W, Jaeger EA, eds. Duane's Clinical Ophthalmology. 2012 ed. Philadelphia, Pa: Lippincott Williams & Wilkins; 2013:vol. 2, chap 35.
Rubenstein JB, Virasch V. Conjunctivitis: infections and noninfections. In: Yanoff M, Duker JS, eds. Ophthalmology. 3rd ed. St. Louis, Mo: Mosby Elsevier; 2008:chap 4.6.
Rubenstein JB, Virasch V. Allergic conjunctivitis. In: Yanoff M, Duker JS, eds. Ophthalmology. 3rd ed. St. Louis, Mo: Mosby Elsevier; 2008:chap 4.7.