Your eye is red, watery, and possibly crusted shut when you wake up. It’s almost certainly conjunctivitis — better known as pink eye — and the first question everyone asks is: how long does pink eye last? The honest answer is that it depends on the cause. Viral pink eye, the most common type, typically runs its course in 7 to 14 days. Bacterial conjunctivitis often resolves faster with antibiotic drops, usually within 5 to 7 days. Allergic conjunctivitis can persist as long as the allergen exposure continues. The CDC reports that pink eye is one of the most common eye conditions in both children and adults, resulting in approximately 6 million cases annually in the United States.
For a broader look at common health conditions and their symptoms, visit our medical conditions guide.
Three Types of Pink Eye and Their Timelines
Not all pink eye is the same. The cause determines the duration, the treatment, and whether you can spread it to others. Understanding which type you have is the first step toward knowing when you’ll feel (and look) normal again.
Viral Conjunctivitis: Day-by-Day Timeline
Viral conjunctivitis accounts for up to 80% of all acute conjunctivitis cases, according to the American Academy of Ophthalmology. It’s caused by adenoviruses — the same family of viruses behind many colds — and follows a predictable pattern.
Days 1-3: Onset
Symptoms usually begin in one eye and may spread to the other within 24-48 hours. The eye turns pink or red, feels gritty or scratchy (like sand in your eye), and produces a watery, thin discharge. You may notice light sensitivity and mild swelling of the eyelid. A cold or upper respiratory infection may accompany the onset. You’re highly contagious from this point.
Days 4-7: Peak Symptoms
Redness intensifies. The watery discharge continues. The second eye is often affected by now. Some people develop a swollen lymph node in front of the ear (preauricular lymphadenopathy) — a hallmark sign that helps doctors distinguish viral from bacterial conjunctivitis. Vision may be slightly blurry due to discharge, but there shouldn’t be significant vision changes.
Days 8-14: Gradual Resolution
Redness slowly fades. Discharge decreases. The gritty sensation eases. Full resolution typically occurs within 14 days, though some cases — particularly those caused by adenovirus types associated with epidemic keratoconjunctivitis (EKC) — can last 3-4 weeks and may cause temporary corneal clouding. You remain contagious for as long as your eyes are red and tearing.
Treatment: There’s no antiviral treatment for most viral conjunctivitis. Management is supportive — cool compresses, artificial tears, and avoiding contact lenses until symptoms fully resolve. Your doctor may prescribe a mild topical anti-inflammatory in severe cases.
Bacterial Conjunctivitis: Day-by-Day Timeline
Bacterial conjunctivitis is caused by organisms like Staphylococcus aureus, Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. It’s more common in children than adults.
Days 1-2: Onset
One eye becomes red with a thick, yellowish-green discharge that may cause the eyelids to stick together, especially after sleep. Unlike viral conjunctivitis, the discharge is purulent (pus-like) rather than watery. The eye may feel irritated and mildly painful.
Days 3-5: With Antibiotic Treatment
Antibiotic eye drops (such as erythromycin ointment, fluoroquinolone drops, or trimethoprim-polymyxin B) begin reducing bacterial load within 24-48 hours. Discharge noticeably decreases. Redness begins to fade. Most people see significant improvement by day 3-4 of treatment.
Days 5-7: Resolution
With antibiotics, most bacterial conjunctivitis cases resolve completely within a week. Without antibiotics, mild bacterial conjunctivitis can still self-resolve in 7 to 10 days — but treatment speeds recovery and reduces the contagious period, which is important for school- and work-age individuals.
Treatment: Antibiotic eye drops or ointment prescribed by a healthcare provider. Warm compresses help loosen crusted discharge. Frequent handwashing is essential to prevent spread.
Allergic Conjunctivitis: Duration and Management
Allergic conjunctivitis isn’t an infection — it’s an immune reaction to allergens like pollen, dust mites, pet dander, or mold. It affects both eyes simultaneously (a key differentiator from infectious types) and causes intense itching, redness, tearing, and sometimes puffy eyelids.
Duration depends entirely on allergen exposure. Seasonal allergic conjunctivitis flares during spring and fall and persists for weeks to months. Perennial allergic conjunctivitis, triggered by year-round allergens, can be a chronic issue.
Treatment: Over-the-counter antihistamine eye drops (ketotifen/Zaditor), oral antihistamines (cetirizine, loratadine), cold compresses, and allergen avoidance. Prescription options include mast cell stabilizers and corticosteroid eye drops for severe cases. Allergic conjunctivitis is not contagious.
How to Tell Which Type You Have
Distinguishing between types at home isn’t always straightforward, but several clues help:
- Watery, thin discharge + cold symptoms = likely viral
- Thick, yellow-green discharge + crusty eyelids = likely bacterial
- Intense itching + both eyes + allergy season = likely allergic
- Swollen lymph node in front of ear = strongly suggests viral
- One eye first, then the other = more common in viral and bacterial
- Both eyes from the start = more likely allergic
When in doubt, a healthcare provider can examine the discharge and eye appearance to make a clinical determination. Cultures are rarely needed for routine cases.
Preventing the Spread of Pink Eye
Viral and bacterial conjunctivitis are highly contagious. The CDC recommends these precautions:
- Wash your hands frequently with soap and water, especially after touching your eyes
- Avoid touching or rubbing your eyes
- Don’t share towels, washcloths, pillowcases, or eye cosmetics
- Replace eye makeup (mascara, eyeliner) used during an infection
- Disinfect contact lens cases and avoid wearing contacts until fully recovered
- Stay home from school or work for at least 24 hours after starting antibiotic treatment (bacterial) or while symptomatic (viral)
Home Remedies and Comfort Measures
While you wait for pink eye to run its course, several home care strategies can reduce discomfort and prevent the infection from spreading within your household.
Warm and Cool Compresses
A warm compress (clean washcloth soaked in warm water) helps loosen crusted discharge from the eyelids — particularly useful each morning when bacterial conjunctivitis glues the lashes shut. Cool compresses can soothe the itching and irritation of allergic and viral conjunctivitis. Use a clean cloth each time and wash used cloths in hot water to avoid recontamination.
Artificial Tears
Preservative-free artificial tears (available over the counter at any pharmacy) help flush irritants and infectious material from the eye surface while providing lubrication. They’re safe for all types of conjunctivitis. Avoid eye drops that claim to “get the red out” (like Visine Original), as the vasoconstrictors in these products can cause rebound redness and don’t address the underlying infection.
Contact Lens Management
If you wear contact lenses, stop wearing them immediately when symptoms appear. Switch to glasses until the infection has fully resolved — typically at least 24 hours after completing antibiotic treatment (for bacterial) or until all symptoms have cleared (for viral). Discard any disposable lenses that were in your eyes when symptoms started. Disinfect reusable lenses and their case thoroughly. The American Academy of Ophthalmology recommends replacing your lens case as well, since biofilm on the case can harbor bacteria.
Hygiene for the Household
Pink eye spreads easily through a household, especially among children. Assign the infected person their own towels and washcloths, washed separately in hot water. Clean and disinfect frequently touched surfaces — doorknobs, faucet handles, light switches. Change pillowcases daily. If one eye is infected, be careful not to cross-contaminate the other (this is harder than it sounds — avoid rubbing and wash hands before and after touching your face).
Pink Eye in Specific Situations
Newborn Conjunctivitis
Conjunctivitis in a newborn (ophthalmia neonatorum) within the first month of life is a medical urgency. It can be caused by bacteria acquired during birth — including Neisseria gonorrhoeae and Chlamydia trachomatis — which can cause severe eye damage if not treated promptly. All US hospitals apply antibiotic eye ointment (erythromycin) to newborns’ eyes within hours of birth as a preventive measure. If a newborn develops eye redness, swelling, or discharge, seek immediate medical care.
Pink Eye With a Cold
It’s very common for viral conjunctivitis to develop alongside or shortly after a cold, since adenoviruses cause both conditions. If you have cold symptoms plus eye redness with watery discharge, the conjunctivitis is almost certainly viral. No special treatment is needed beyond supportive care for both the cold and the eye infection. The pink eye will typically resolve as the cold resolves, following the 7-14 day viral timeline.
When to See a Doctor
Many mild cases of pink eye can be managed at home. However, schedule an appointment if:
- Symptoms don’t improve after 5-7 days (bacterial) or 2 weeks (viral)
- You experience significant eye pain (beyond mild irritation)
- Your vision becomes blurry or you see halos around lights
- The discharge is very heavy or your eyelids swell significantly
- You wear contact lenses and develop conjunctivitis symptoms
- You have a weakened immune system
- A newborn (under 28 days old) develops eye redness or discharge — this requires urgent evaluation
When to seek emergency care: Call 911 or go to the nearest emergency room if you experience sudden severe eye pain, sudden vision loss, chemical exposure to the eye, or an eye injury combined with redness and discharge.
Over-the-Counter Treatments and What to Avoid
While prescription antibiotic drops are needed for bacterial conjunctivitis, several OTC products can help manage symptoms of all types.
Recommended OTC options:
- Preservative-free artificial tears (Refresh, Systane, TheraTears) — safe for all types, soothes irritation and flushes discharge
- Antihistamine eye drops (Zaditor, Pataday, Alaway) — specifically for allergic conjunctivitis; relieves itching within minutes
- Cool compresses — reduce swelling and soothe itching for viral and allergic types
- Warm compresses — loosen crusted discharge in bacterial conjunctivitis
What to avoid:
- Redness-reducing drops (original Visine, Clear Eyes) — the vasoconstrictors in these drops temporarily reduce redness but can cause rebound redness when discontinued, don’t treat the underlying infection, and may mask symptoms that need medical evaluation
- Contact lens rewetting drops — these are not appropriate for treating conjunctivitis and should not be used while contacts are out during an infection
- Herbal or homeopathic eye drops — the FDA has issued warnings about contamination risks in some of these products, and they lack evidence for treating conjunctivitis
Frequently Asked Questions
Can I go to work or school with pink eye?
Many schools and workplaces require you to stay home with bacterial conjunctivitis until you’ve been on antibiotic drops for 24 hours. With viral conjunctivitis, there’s no specific treatment to reduce contagiousness, so policies vary. The CDC recommends good hygiene and consulting your school or employer’s health policy.
Will pink eye go away without treatment?
Viral conjunctivitis resolves on its own — no treatment speeds the virus. Mild bacterial conjunctivitis also self-resolves in many cases, though antibiotic drops speed recovery and reduce spread. Allergic conjunctivitis persists until the allergen is removed or the immune response is managed with medication.
Can pink eye cause permanent damage?
Uncomplicated conjunctivitis rarely causes lasting damage. However, certain aggressive infections — particularly gonococcal conjunctivitis or severe adenoviral keratoconjunctivitis — can affect the cornea and potentially impair vision if untreated. This is why severe or persistent cases should be evaluated promptly.
Is pink eye always contagious?
No. Allergic conjunctivitis is not contagious at all. Only viral and bacterial forms spread from person to person. Chemical or irritant-induced conjunctivitis (from chlorine, smoke, etc.) is also non-contagious.
The Bottom Line
How long pink eye lasts depends on the cause: viral conjunctivitis takes 1-2 weeks, bacterial clears in about a week with antibiotic drops, and allergic conjunctivitis sticks around as long as the allergen does. Good hygiene — especially handwashing and not sharing personal items — is your best defense against spreading or catching the infectious forms. If your symptoms are severe, worsening, or affecting your vision, don’t wait it out. An eye care professional can determine the type and get you the right treatment.