Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.
Acute conjunctivitis is a rapid-onset inflammation of the thin membrane that covers the white of the eye and the inside of the eyelids. It causes redness, discharge, irritation, and tearing that develop over hours to a few days. Triggers include viruses, bacteria, allergens, and chemical or contact lens irritation. Most cases are self limited, but correct identification guides safe, faster relief.
read more about acute conjunctivitis ...Viral infections, especially adenovirus, produce watery discharge and are highly contagious. Bacterial forms create thicker, mucopurulent discharge and can stick the lids together on waking. Allergic flares itch intensely and often pair with sneezing or nasal symptoms. Irritant causes include smoke, chlorine, cosmetics, and poor lens hygiene.
The conjunctiva and tear film contain immune cells and enzymes that fight invading microbes. When infection occurs, increased tear production and redness are part of the body's effort to wash out and neutralize pathogens.
You should see your eye doctor if you notice sudden or persistent changes in your vision such as blurriness, flashes of light, floaters, or eye pain. Redness, swelling, or discharge that does not improve with basic care also warrants a checkup. Even if symptoms seem mild, getting a professional evaluation can help detect problems early and prevent complications. Regular eye exams are also important to monitor your overall eye health and keep your vision clear.
Treatment matches the cause: cool compresses and preservative free lubricants help most cases, while antibiotics are reserved for suspected bacterial infection. Antihistamine mast cell stabilizer drops calm allergic itch and swelling. Strict hand hygiene and avoiding eye rubbing limit spread. Contact lens wear should stop until the surface is quiet.
See a clinician if you have severe pain, light sensitivity, blurred vision, contact lens use with pain, or symptoms that persist beyond several days. These features can signal keratitis or uveitis rather than simple conjunctivitis. Infants and immunocompromised patients warrant earlier evaluation. Prompt care prevents complications.
Wash hands frequently, avoid sharing towels or cosmetics, and disinfect high touch surfaces. Replace or discard eye makeup and lens cases after infection. Stay out of pools and group settings during active viral shedding. Short term precautions reduce outbreaks at home and work.
Do I always need antibiotics? No, many cases are viral or allergic and improve without them.
Can I go to work or school? Viral forms spread easily; follow local guidance and practice hygiene.
Will warm or cool compresses help? Cool often soothes itch and swelling; warm can loosen discharge.
“About Pink Eye.” Centers for Disease Control and Prevention (CDC). https://www.cdc.gov/conjunctivitis/about/index.html
. Published Apr 15, 2024.
“Clinical Overview of Conjunctivitis.” Centers for Disease Control and Prevention (CDC). https://www.cdc.gov/conjunctivitis/hcp/clinical-overview/index.html
. Published Apr 15, 2024.
“Pink Eye (Conjunctivitis).” American Academy of Ophthalmology (AAO). https://www.aao.org/eye-health/diseases/pink-eye-conjunctivitis
. Published Jul 16, 2025.
“Pink Eye (Conjunctivitis).” Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/pink-eye/symptoms-causes/syc-20376355
. Published Jan 10, 2025.
“Infectious Conjunctivitis.” Merck Manual Consumer Version. https://www.merckmanuals.com/home/eye-disorders/conjunctival-and-scleral-disorders/infectious-conjunctivitis
. Reviewed and revised Apr 2025.