Eye health
Pink eye in kids: nobody can tell just by looking
Not you, and not the doctor either. Which turns out to matter less than you would think — because most of it clears up on its own regardless.
Buddy's quick answer
Pink eye can be viral, bacterial, allergic or a plain irritant, and no single sign reliably tells them apart — not the colour of the discharge, not one eye versus two. Most cases get better on their own in about a week. Antibiotic drops help a little, less than parents expect, and roughly two out of three US children are given them anyway. The AAP does not require antibiotics or a doctor's note before a child returns to school. See a doctor promptly for eye pain, light sensitivity, blurred vision, a newborn, or any contact lens wearer.
The uncomfortable bit
The colour of the goop tells you almost nothing
Every parent has been taught the same rule of thumb: yellow-green and crusty means bacterial, watery means viral, itchy means allergies. It is a good story. It is not supported by the evidence.
A 2022 systematic review in JAMA pooled 32 studies and concluded that no single symptom or sign distinguished bacterial from viral conjunctivitis with high certainty. In one study of patients with culture-confirmed bacterial conjunctivitis, 58% reported itching, 65% reported burning, and 35% had watery discharge or none at all — every symptom the folk rule assigns to the other categories.
This is not a failure of parenting. Clinical accuracy in diagnosing viral conjunctivitis by examination alone has been measured at under 50% against laboratory confirmation. The CDC says so too: the signs overlap, "which can make diagnosis difficult."
What the trials show
Most of it gets better on its own
Here is the number that reframes the whole thing. The 2023 Cochrane review of antibiotics for acute bacterial conjunctivitis — the cases antibiotics are actually meant for, most of them culture-proven — found that by days four to nine, 55.5% of the placebo group had cleared up on their own, against 68.2% of those given antibiotics.
Read that twice. Even in the diagnosis where drops are the right answer, more than half of people got better on a placebo.
In children specifically, a randomised trial of 326 children aged six months to twelve years, published in The Lancet, compared chloramphenicol drops with placebo. Cure by day seven: 86% with the antibiotic, 83% with placebo — a difference of 3.8 percentage points, which was not statistically significant. The authors' conclusion was blunt: most children with acute infective conjunctivitis in primary care "will get better by themselves and do not need treatment with an antibiotic."
The American Academy of Pediatrics says the same thing in plainer words: antibiotics "shorten the course of illness a very small amount," and most children get better after five or six days without them.
What actually happens
Roughly two in three children get drops anyway
A 2024 study in JAMA Ophthalmology looked at nearly 45,000 US paediatric conjunctivitis visits. 69% of the children were given topical antibiotics within a day. Among children whose visit was coded as viral conjunctivitis — where antibiotics do nothing at all — 28% still received them. In eye clinics, where the clinician is an eye specialist, the figure dropped to 34%.
The drops were not associated with fewer return visits. Serious outcomes were vanishingly rare in either group: hospitalisation in 0.03% of cases.
None of which means drops are never right. It means the default is worth questioning, and there is a middle path that clinical guidance now explicitly supports: delayed prescribing. You leave with a prescription and an agreement to fill it only if things have not improved after about three days. American Family Physician reports this achieves similar symptom control while cutting antibiotic use by half.
Side by side
What parents are told, and what the evidence says
| The common belief | What the evidence says | |
|---|---|---|
| Telling types apart | Yellow discharge means bacterial | No single sign separates them reliably |
| Antibiotic drops | Needed to clear it up | 55.5% clear on placebo by days 4–9 |
| In children | Drops speed recovery a lot | 86% vs 83% cured by day 7 — not significant |
| Going back to school | 24 hours of drops first | AAP: antibiotics are not required to return |
| Doctor's note | School needs one | AAP: documentation is not required |
| Contact lens wearers | Same as everyone else | The exception — see a doctor promptly |
The gap worth knowing about
Your school's rule may not match the AAP's
This is the part that costs families the most time, and almost nobody knows it.
The American Academy of Pediatrics' own child-care and school guidance says a child with pink eye should not be excluded from the group setting unless they are too unwell to take part or meet some other exclusion criterion. On returning, it is explicit on two points: "Antibiotics are not required to return to an ECE program or school," and "Documentation from the child's health professional is not required." Minnesota's health department puts the AAP's reasoning memorably — consider conjunctivitis like the common cold, easily spread among children and resolving without treatment.
Now the reality. A 2022 survey in the Journal of AAPOS reviewed every US state policy for school-age students. Fifteen states had no policy at all. Ten allowed the child to stay in school. Five permitted return only 24 hours after starting antibiotics, and five required a physician's approval. Not one state policy referenced the American Academy of Ophthalmology.
So if your school demands drops or a note, it is applying a rule the AAP does not endorse — and in some states the school is following a state policy that does not match the paediatric guidance either. Some states are catching up: South Carolina's 2025–26 exclusion list now says plainly that antibiotics are not required.
Worth knowing before you take an afternoon off work for an appointment whose main purpose is a signature.
Do not wait
When it is not just pink eye
Pain, light or vision
The CDC and the National Eye Institute both name the same signals: genuine eye pain, sensitivity to light, blurred vision that does not clear after you wipe the discharge away, intense redness, or symptoms getting worse rather than better. Ordinary conjunctivitis is irritating and gritty. It does not hurt.
Anyone wearing contact lenses
This is the clear exception to everything above. A red eye in a contact lens wearer carries a real risk of bacterial keratitis, a corneal infection that can threaten sight. The CDC's instruction is unambiguous: take the lenses out immediately, do not put them back in until an eye doctor says so, and get seen promptly. Throw away the lenses and the case. This is the one situation where "wait and see" is the wrong call.
A newborn, or a swollen eyelid with fever
Any pink eye in a newborn needs a doctor straight away — the causes in the first weeks of life are different and some are urgent. Separately, at any age: an eyelid that is swollen, hot and tight, pain when the eye moves, the eye looking pushed forward, or double vision, together with a fever, is not conjunctivitis. That picture needs same-day medical care.
Meanwhile
What actually helps at home
Not much, and that is the honest answer. Artificial tears for comfort — AAPOS names them as the usual treatment for viral cases. A clean, damp washcloth to wipe discharge away, several times a day, using a fresh cloth each time. A cool compress if the eyes are itchy and allergic.
The CDC's hygiene list is worth following properly, because this is genuinely contagious: wash hands often for at least 20 seconds, do not rub the eyes, wash pillowcases, towels and washcloths frequently in hot water, and share none of them. Throw away disposable products used while the eye was infected.
How long it lasts: the NEI says pink eye often gets better on its own in seven to ten days. Viral cases usually clear in one to two weeks and stay contagious while symptoms are present — adenoviral pink eye, the most common viral cause, can be contagious for well over a week. Allergic and irritant conjunctivitis are not contagious at all.
Being straight with you
And the glasses question
You will find plenty of pages telling you to replace your child's frames after pink eye. We sell frames, so we have every reason to agree with them, and we are not going to: no health authority recommends it. Not the AAP, not the AAO, not the CDC, not the NEI. Every version of that advice we could find traces back to a retailer.
What the guidance actually says is about contacts: take them out, replace the lenses, replace the case. Glasses are the safe fallback while an eye is infected — which is a genuine argument for having an up-to-date spare pair, and about the only glasses-specific thing worth saying here. Beyond that: keep them clean, and do not share them.
Buddy-picked
Frames worth having as the backup pair
Does my child need antibiotic drops for pink eye?
Usually not. The 2023 Cochrane review found 55.5% of people with bacterial conjunctivitis cleared up on placebo by days four to nine, against 68.2% on antibiotics. In a randomised trial of 326 children, cure by day seven was 86% with antibiotic drops and 83% with placebo — not a significant difference. The American Academy of Pediatrics says antibiotics shorten the illness only a very small amount. Ask your doctor about delayed prescribing: fill the prescription only if things have not improved in about three days.
Can I tell if it is viral or bacterial by the discharge?
No, and neither can a doctor by looking. A 2022 JAMA systematic review of 32 studies found no single symptom or sign distinguishes them with high certainty. In one study of culture-confirmed bacterial conjunctivitis, 58% of patients had itching and 35% had watery discharge or none — the features usually attributed to viral or allergic causes. Clinical accuracy for diagnosing viral conjunctivitis by examination has been measured at under 50%.
Does my child need to stay home from school with pink eye?
The American Academy of Pediatrics says no, unless the child is too unwell to take part in normal activities. Its guidance states explicitly that antibiotics are not required to return, and that documentation from a health professional is not required. However, school policies vary widely: a 2022 survey found five US states allow return only 24 hours after starting antibiotics and five require physician approval, while fifteen have no policy at all. Check your school's rule, and know that it may be stricter than the paediatric guidance.
When should I take my child to a doctor for pink eye?
Go promptly for eye pain, sensitivity to light, blurred vision that does not clear when discharge is wiped away, intense redness, or symptoms that are getting worse. Any pink eye in a newborn needs to be seen right away. A swollen, hot eyelid with fever, pain when the eye moves, or the eye appearing pushed forward needs same-day care — that is not conjunctivitis. And any red eye in a contact lens wearer should be seen promptly.
My child wears contact lenses and has a red eye. What should I do?
Take the lenses out immediately and do not put them back in until an eye doctor says it is safe. Contact lens wearers with conjunctivitis are at higher risk of bacterial keratitis, a corneal infection that can threaten sight, so they should be evaluated promptly rather than waiting it out. Discard the lenses that were being worn and the case. Wear glasses in the meantime.
Should we replace my child's glasses after pink eye?
No. No health authority — not the AAP, AAO, CDC or NEI — recommends replacing eyeglasses or frames after conjunctivitis. The guidance that does exist concerns contact lenses, which should be discarded along with the case. For glasses, keep them clean and do not share them. We sell glasses and we would still rather tell you this than sell you a pair you do not need.
Keep exploring
Helpful next reads
If the redness turns out to be nothing but something else is still off, 7 signs your child needs glasses is the place to start, and what a school vision screening misses explains why a passed screening is not the whole story. Struggling to read and lazy eye both cover things children never report themselves. When it is time for frames, our frame finder and PD measuring guide get the fit right first time.
Where this comes from
Sources
Cochrane: Antibiotics versus placebo for acute bacterial conjunctivitis (2023) · JAMA Rational Clinical Examination: Does this patient have a bacterial infection? (2022) · Rose et al., chloramphenicol vs placebo in children (The Lancet, 2005) · JAMA Ophthalmology: Antibiotic treatment and health care use in children with conjunctivitis (2024) · American Academy of Pediatrics: Pinkeye (Conjunctivitis) · CDC: Pink Eye Treatment · CDC: Preventing Pink Eye · National Eye Institute: Pink Eye · AAPOS: Conjunctivitis · American Academy of Ophthalmology: Conjunctivitis Preferred Practice Pattern · American Family Physician: Conjunctivitis — Diagnosis and Management (2024) · Minnesota Department of Health: Conjunctivitis
While the contacts are out
An infected eye is exactly when a spare pair of glasses stops being optional. Ours start at $14.95, and every frame comes with a 30-day Perfect Fit Guarantee.
Shop Kids Prescription Glasses