Most cases of conjunctivitis clear up within one to two weeks, though the exact timeline depends on whether the cause is viral, bacterial, or allergic. Viral pink eye, the most common type, typically lasts up to two weeks. Bacterial pink eye often resolves faster, especially with antibiotic drops. Allergic conjunctivitis can linger for weeks or months if the trigger stays in your environment.
Viral Conjunctivitis Timeline
Viral pink eye is the most common form and also the slowest to resolve on its own. Symptoms usually persist for several days to two weeks, though in rare cases they can stretch to three weeks. The infection tends to start in one eye and spread to the other within a day or two.
Symptoms typically peak around days three through five, when redness, watering, and irritation are at their worst. After that peak, you’ll notice a gradual improvement. There’s no antiviral treatment for routine viral conjunctivitis. It simply has to run its course, much like a common cold. Cool compresses and artificial tears can help manage discomfort while you wait it out.
One tricky aspect of viral pink eye is the gap between exposure and symptoms. You can develop signs anywhere from 12 hours to 12 days after infection, which makes it difficult to pinpoint where you picked it up. You remain contagious as long as your eyes are still tearing and producing discharge.
Bacterial Conjunctivitis Timeline
Bacterial pink eye produces thicker, yellow-green discharge compared to the watery eyes of viral infections. Without treatment, mild bacterial conjunctivitis often resolves on its own within 7 to 10 days. With antibiotic eye drops or ointment, most people see noticeable improvement within two to three days, and the infection typically clears within a week.
Antibiotics also shorten the window during which you can spread the infection. You’re generally considered contagious from the moment symptoms appear until about 48 hours after starting antibiotic treatment. That 48-hour mark is the guideline many schools and workplaces use to decide when someone can return.
Allergic Conjunctivitis Timeline
Allergic conjunctivitis behaves differently from infectious types because it’s driven by your immune system’s reaction to an allergen, not by a virus or bacterium. Symptoms like itching, redness, and puffiness usually improve once you remove the allergen from your environment. If the trigger is pet dander and you leave the house where the pet lives, your eyes may feel better within hours to a day.
Seasonal allergic conjunctivitis tied to pollen, however, can persist for weeks or even the entire allergy season. Over-the-counter antihistamine eye drops and oral allergy medications help control symptoms, but they won’t fully resolve until your allergen exposure drops. Unlike viral and bacterial pink eye, allergic conjunctivitis is not contagious.
When Pink Eye Becomes Chronic
The American Academy of Ophthalmology defines conjunctivitis lasting longer than three weeks as chronic. At that point, the cause is less likely to be a simple viral or bacterial infection and more likely to be an ongoing allergic response, a persistent irritant (like contact lens overuse or chemical exposure), or an underlying condition that needs a different treatment approach. If your symptoms keep getting worse after a few days, or if they haven’t started to fade after two weeks, it’s worth getting evaluated.
When You Can Go Back to School or Work
Return policies vary, but the CDC’s general guidance is that you can go back if you don’t have a fever or worsening symptoms and your doctor approves. If your work or school involves close contact with others, you should stay home while you still have active symptoms like tearing and discharge.
For bacterial pink eye treated with antibiotics, the practical rule is 48 hours of treatment before returning. For viral pink eye, which has no antibiotic shortcut, you may need to stay home for the full duration of noticeable symptoms, which can mean a week or more. Many schools allow return once the heavy discharge stops, even if some redness remains.
Pink Eye in Newborns
Conjunctivitis in newborns is a separate and more urgent situation. Babies can pick up bacterial infections during delivery, and certain bacteria can cause corneal ulcers and permanent vision damage if left untreated. Any newborn showing signs of pink eye, including redness, swelling, or discharge, needs immediate medical attention. The timelines for adult pink eye do not apply here.
How to Tell Which Type You Have
The type of discharge is the most useful clue. Viral conjunctivitis produces watery, clear discharge and often accompanies a cold or upper respiratory infection. Bacterial conjunctivitis causes thick, sticky, yellow-green discharge that can crust your eyelids shut overnight. Allergic conjunctivitis is marked by intense itching in both eyes, often alongside sneezing and a runny nose.
Knowing the type helps you estimate your timeline. If your eyes are watery and you recently had a cold, plan for up to two weeks. If there’s thick discharge, antibiotic drops can cut recovery to under a week. If itching is the dominant symptom and it’s allergy season, your eyes will improve when pollen counts drop or you start allergy medication.