Most cases of pink eye clear up within one to three weeks, depending on the type. Viral pink eye, the most common form, typically runs its course in two to three weeks. Bacterial pink eye resolves faster with antibiotic drops, and allergic pink eye can last anywhere from under an hour to several months if the trigger isn’t removed.
Viral Pink Eye: The Most Common Type
Viral pink eye is usually caused by adenoviruses, the same family of viruses behind the common cold. There’s no medication that kills the virus. It simply needs time to run its course, which typically takes two to three weeks. Some cases resolve closer to one week, while rare ones linger longer.
Symptoms often start in one eye and spread to the other within a day or two. You’ll notice watery discharge, redness, and a gritty feeling. The worst discomfort usually hits in the first week before gradually improving. During recovery, cool or warm compresses and over-the-counter artificial tears can help manage the irritation. If you use a compress, soak a clean, lint-free cloth in water and wring it out before applying it gently to your closed eyelids. Use a separate cloth for each eye to avoid spreading the infection.
Bacterial Pink Eye: Faster With Treatment
Bacterial pink eye produces thicker, yellow-green discharge that can crust your eyelids shut overnight. Without treatment, mild bacterial cases often resolve on their own within one to two weeks. Antibiotic eye drops or ointment can shorten that timeline significantly, with many people seeing improvement within a few days of starting treatment.
One important detail: you remain contagious until about 48 hours after starting antibiotics, according to the American Academy of Ophthalmology. Before that 48-hour mark, or if you skip antibiotics entirely, you can spread it through direct contact, shared towels, or contaminated surfaces. Adenoviruses and bacteria can survive on doorknobs, countertops, and medical instruments for hours, so regular handwashing matters.
Allergic Pink Eye: Depends on the Trigger
Allergic pink eye behaves differently from infectious types because it’s driven by your immune system’s reaction to pollen, pet dander, dust mites, or other allergens. Symptoms can last less than an hour or persist for days, weeks, or even months. It all depends on what you’re allergic to and whether you can avoid the trigger.
If you remove the allergen, relief comes quickly. Oral antihistamines start working in about 30 minutes, and allergy eye drops kick in after roughly an hour. Seasonal allergic conjunctivitis tends to flare during spring and fall and can linger for the entire allergy season if untreated. Unlike viral and bacterial forms, allergic pink eye isn’t contagious and almost always affects both eyes at once.
When You Can Go Back to Work or School
The CDC recommends staying home if you have viral or bacterial pink eye with systemic symptoms like fever, especially if you can’t avoid close contact with others. Most schools and workplaces follow a similar guideline: you can return once symptoms are clearly improving, any prescribed treatment is underway, and a clinician gives approval if required by your school or employer’s policy.
For bacterial pink eye, the practical benchmark is 48 hours on antibiotics. For viral pink eye, there’s no antibiotic shortcut, so the contagious period lasts longer, generally as long as the eyes are red and tearing. Frequent handwashing, avoiding touching your face, and not sharing pillowcases or towels are the most effective ways to keep it from spreading to others in your household.
Signs That Need Prompt Attention
Most pink eye is annoying but harmless. However, certain symptoms point to something more serious. Eye pain (not just irritation), blurred vision, intense light sensitivity, or a feeling that something is stuck in your eye all warrant urgent care. These can signal conditions like a corneal ulcer or deeper eye infection that require different treatment.
Contact lens wearers should stop wearing lenses as soon as symptoms appear. If your symptoms don’t improve within 12 to 24 hours after switching to glasses, see an eye care professional. Contact lens use raises the risk of bacterial infections that can damage the cornea quickly.
Pink Eye in Newborns
Pink eye in newborns is a separate situation that always requires immediate medical evaluation. Bacteria picked up during delivery can cause infections that appear within the first five to twelve days of life, depending on the organism involved. Some of these infections, if untreated, can lead to corneal damage, bloodstream infections, or even blindness. Any newborn showing red, swollen, or discharging eyes should be seen by a doctor right away.
One exception: chemical conjunctivitis from antibiotic eye ointment routinely given at birth. This mild irritation typically resolves on its own within 24 to 36 hours and isn’t cause for concern.