Does conjunctivitis in babies need antibiotic eye drops?

It depends on the type. Bacterial conjunctivitis responds well to antibiotic eye drops within 3-5 days. Viral conjunctivitis has no specific treatment — it clears on its own in 1-2 weeks with eye cleaning. Allergic conjunctivitis requires antihistamines. Only a pediatrician can tell the types apart on physical examination.

How long does viral conjunctivitis last in children?

Viral conjunctivitis lasts an average of 7 to 14 days. It may worsen in the first 3-4 days before improving. There is no specific treatment — only eye cleaning with saline and monitoring with the pediatrician.

Is conjunctivitis contagious? When can my child return to daycare?

Viral and bacterial conjunctivitis are highly contagious — spread through contact with eye discharge, hands, and shared objects. Allergic conjunctivitis is not contagious. Most daycares require 24-48 hours of treatment before returning. Always check with the specific institution.

How do you tell bacterial conjunctivitis apart from viral?

Bacterial conjunctivitis produces thick yellow or green discharge, the eye is often sealed shut in the morning, and it usually starts in one eye. Viral conjunctivitis has watery or whitish discharge, often accompanies a cold, and may come with swollen lymph nodes in the neck. Only a medical examination confirms the type.

Can I clean my baby's eye with breast milk?

There is no scientific evidence that breast milk treats conjunctivitis. On the contrary, it may introduce bacteria and worsen the infection. Use sterile saline (0.9%) and clean cotton, always wiping from the inner corner to the outer corner of the eye.

Is conjunctivitis in newborns serious?

Yes. Conjunctivitis in babies aged 0-30 days (neonatal) must be evaluated by a pediatrician immediately, as it may be caused by gonorrhoea or chlamydia — serious infections that require urgent treatment. Never wait to see if it improves in newborns.

Conjunctivitis in Babies and Children: Symptoms and Treatment

You walk into your child's room in the morning and find the eye crusted shut, red, with that discharge that alarms every parent. It could be conjunctivitis — inflammation of the conjunctiva is one of the most common eye complaints in childhood. The problem is that there are three types with completely different causes and treatments, and mixing them up can delay recovery or lead to unnecessary medication. In this guide, I explain how to identify each type, when to see the paediatrician, and what to do at home.

What Is Conjunctivitis?

Conjunctivitis is inflammation of the conjunctiva — the transparent membrane that covers the white of the eye (sclera) and lines the inside of the eyelids. When inflamed, the blood vessels in the conjunctiva become visible, giving the characteristic red eye appearance.

Children are especially vulnerable because they touch their eyes frequently, share objects at daycare, and have not yet built a consistent hygiene habit. It is one of the most common complaints in paediatric consultations — and also one of the most mismanaged, since many parents use antibiotic eye drops when there is no real indication.

The 3 Types of Conjunctivitis

Viral

Most common. Caused by adenoviruses and other respiratory viruses. Self-limiting — resolves on its own.

Bacterial

Caused by bacteria such as S. aureus and H. influenzae. Responds to antibiotic drops in 3-5 days.

Allergic

Reaction to allergens (pollen, dust mites, pet hair). Not contagious. Requires antihistamine.

Symptoms: How to Tell the Types Apart

The appearance of the discharge and associated symptoms are the main clues to suspect the type — but only a medical examination confirms it.

Feature	Viral	Bacterial	Allergic
Discharge	Watery or whitish	Yellow or green, thick	Watery or mucous
Eye sealed in the morning	Mild	Intense (frequent)	Mild to moderate
Eyes affected	One, then may spread	One, then the other	Both at the same time
Itching	Mild	Mild to moderate	Intense (main symptom)
Accompanies a cold?	Often	Sometimes	No
Swollen lymph nodes in neck	Common	Less common	No
Contagious?	Yes	Yes	No

Signs of Bacterial Conjunctivitis

Thick yellow or green discharge

Eye completely sealed shut on waking

Starts in one eye, spreads to the other

Swollen eyelid

Less itching than allergic type

Signs of Allergic Conjunctivitis

Intense itching — child rubs eye constantly

Both eyes affected at the same time

Swollen eye (chemosis)

Improves away from the allergen

Frequently associated with allergic rhinitis

Children with allergic rhinitis are much more likely to develop allergic conjunctivitis — the two conditions frequently go together (allergic rhinoconjunctivitis). If your child sneezes a lot, has recurrent nasal congestion and a red itchy eye, consider allergy.

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Is Conjunctivitis Contagious? Daycare and School

Viral and bacterial conjunctivitis are highly contagious. Transmission happens through:

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Direct contact

Touching the infected eye then touching another person or surface

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Shared objects

Towels, pillowcases, toys, cushions and glasses

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Droplets

Sneezes and coughs — especially in viral conjunctivitis linked to a cold

When Can My Child Return to Daycare?

Bacterial: Usually 24-48 hours after starting antibiotic drops, once discharge reduces

Viral: When there is no more eye discharge (may take 7-14 days); some daycares accept return after 24-48 h of cleaning with no active discharge

Allergic: Can attend daycare normally — it is not contagious

⚠️ Each institution has its own protocol. Always confirm with the daycare or school.

When to See the Paediatrician

See the Paediatrician Today If:

Baby aged 0-30 days with a red or discharging eye (any amount)

Very swollen eye or eyelid that closes spontaneously

Intense eye pain (different from itching)

Blurred vision or loss of vision

Severe light sensitivity (cannot open eye in light)

High fever associated with the eye symptoms

No improvement after 3-4 days of prescribed antibiotic drops

Discharge returns immediately after cleaning

Special Alert: Neonatal Conjunctivitis (0-30 days)

Conjunctivitis in newborns can be caused by gonorrhoea or chlamydia — transmitted during delivery. These infections are serious and can damage vision if not treated quickly. Therefore, any red eye or discharge in a baby under 30 days requires immediate medical assessment — do not wait to see if it clears up.

To understand when other paediatric symptoms need urgent attention, read: Baby Fever: When to See a Doctor.

Treatment by Type

Viral Conjunctivitis

There is no specific treatment. The virus needs time to be cleared by the body itself — just like a cold. What helps with symptoms:

What to Do

Clean eyes with sterile saline (0.9%) every 4-6 hours

Use a cold compress to relieve discomfort

Wash hands frequently

Do not share towels or pillows

Artificial tears if recommended by the doctor

What NOT to Do

Use antibiotic drops without a prescription (ineffective for viral)

Apply breast milk — no scientific evidence, may worsen infection

Cover the eye (creates a warm, moist environment for bacteria)

Use chamomile tea or boric acid rinses

Bacterial Conjunctivitis

Responds well to antibiotic eye drops or ointment prescribed by the paediatrician. The most commonly used antibiotics are tobramycin, azithromycin and chloramphenicol. Improvement usually appears within 24-48 hours, but it is important to complete the full course — usually 5 to 7 days.

Why not buy antibiotic drops over the counter? Apart from requiring a prescription, different antibiotics target different bacteria. Using the wrong product may not resolve the problem — and indiscriminate use contributes to antibiotic resistance.

Allergic Conjunctivitis

Treatment involves two axes:

Remove or reduce the allergen

Wash hands after contact with animals, keep the bedroom free of dust mites, avoid environments with heavy dust or pollen

Antihistamine or mast-cell stabiliser eye drops

Prescribed by the paediatrician or allergist; relieve itching and redness

Treat associated allergic rhinitis

When rhinitis is present, combined treatment is more effective

How to Clean Your Baby's Eye Correctly

Wash your hands thoroughly with soap and water before touching your child's eye

Use sterile saline (0.9%) — never tap water or home-made solutions

Dampen a sterile cotton ball or gauze with the saline

Wipe from the inner corner (near the nose) to the outer corner — in one smooth stroke

Use a fresh cotton ball for each wipe and for each eye

Repeat every 4-6 hours or whenever discharge is visible

Discard the used cotton immediately and wash your hands again

Prevention

Frequent handwashing

The most effective measure — especially before and after touching the eyes

No shared towels

Use individual towels for each family member

Do not rub the eyes

Teach your child not to rub their eyes with dirty hands

Separate pillowcases

Change pillowcases frequently and do not share with an infected child

Allergen control

For allergic conjunctivitis: anti-mite mattress covers, vacuum frequently

Keep away from daycare during contagious period

Reduces spread to other children and repeat visits to the doctor

Viral conjunctivitis frequently accompanies a cold or flu. The same virus that inflames the throat can inflame the conjunctiva. It is also common for children with viral conjunctivitis to develop an ear infection in the following days — another reason to monitor the evolution carefully.