Pink Eye in Children: When Are Antibiotic Drops Actually Needed?

What is pink eye?

“Pink eye” is another name for conjunctivitis, which means inflammation of the thin, clear tissue covering the white of the eye and the inside of the eyelids.

The eye may look:

• Pink or red
• Watery
• Crusty or goopy
• Irritated or gritty

Conjunctivitis can be caused by:

• Viruses
• Bacteria
• Allergies
• Irritants

Symptoms overlap, so no single finding—including the color of the discharge—can always tell you the cause.

Viral, bacterial, or allergic?

Certain patterns can give clues.

Viral pink eye

Viral conjunctivitis often:

• Starts in one eye and spreads to the other
• Causes mostly watery discharge
• Occurs along with a cold, sore throat, or other respiratory symptoms
• May cause a tender or swollen lymph node in front of the ear

It is very contagious but usually improves on its own within about 1 to 2 weeks.

Antibiotic drops do not help viral pink eye.

Bacterial pink eye

Bacterial conjunctivitis is more likely to cause:

• Thick yellow or green discharge
• Eyelids that become crusted or “glued” shut after sleep
• Discharge that returns fairly quickly after being wiped away
• One or both eyes being affected

Mild bacterial conjunctivitis can also improve without antibiotics.

Antibiotic eye drops or ointment may shorten the illness somewhat and are appropriate in some cases, depending on the child's symptoms, age, and examination.

Allergic conjunctivitis

Allergic conjunctivitis is not an infection.

It usually causes:

• Very itchy eyes
• Both eyes being affected
• Watery rather than thick discharge
• Sneezing
• Runny or itchy nose
• Other seasonal or environmental allergy symptoms

Allergic conjunctivitis is not contagious.

Treatment may include avoiding triggers and using allergy eye drops recommended for your child's age.

A quick parent guide

These patterns can be useful:

• Watery red eye + cold symptoms → often viral
• Thick discharge + matted eyelids → more suggestive of bacterial
• Very itchy + both eyes → more suggestive of allergy
• Pain + light sensitivity + vision change → not typical simple pink eye; get evaluated

These are only clues.

No single symptom can diagnose the cause with certainty.

Other eye problems that can look like pink eye

Not every watery, crusty, or red eye is conjunctivitis.

Stye

A stye is a tender red bump near the edge of the eyelid caused by inflammation or infection of an eyelid gland.

Warm compresses several times a day often help it drain and improve.

Blepharitis

Blepharitis causes irritated, flaky, or crusty eyelid margins, often around the eyelashes.

Warm compresses and gentle eyelid cleaning are common treatments.

Blocked tear duct

A blocked tear duct—also called nasolacrimal duct obstruction—is very common in babies.

It often causes:

• Persistent watering
• Mucus or crusting
• Discharge that comes and goes

The white of the eye usually stays relatively clear.

A red, painful, swollen area beside the nose may indicate an infection of the tear sac called dacryocystitis, which needs prompt medical attention.

For more information, see the Elite Pediatric Concierge guide: Blocked Tear Ducts in Babies: What Parents Should Know.

Corneal infection

An infection of the cornea—the clear front surface of the eye—is called keratitis.

This can threaten vision and needs prompt medical care.

Risk is especially important in children and teenagers who wear contact lenses.

What if my child wears contact lenses?

If your child wears contact lenses and develops a red eye, stop contact-lens use immediately.

A contact-lens wearer with:

• Eye pain
• Significant redness
• Light sensitivity
• Blurred or decreased vision
• Persistent foreign-body sensation

should be evaluated promptly.

Contact-lens wear increases the risk of corneal infection, which is different from routine uncomplicated conjunctivitis.

Do not restart contact lenses until the eye is fully better and your child's clinician says it is safe.

Discard or replace contaminated lenses, cases, and eye products as directed.

How contagious is pink eye?

Viral and bacterial conjunctivitis can spread easily.

Transmission can occur through:

• Hands
• Shared towels or washcloths
• Pillowcases
• Toys
• Eye makeup or eye products
• Direct contact with eye secretions

To reduce spread:

• Wash hands frequently with soap and water
• Encourage your child not to rub their eyes
• Do not share towels, washcloths, pillows, or eye products
• Wash pillowcases and towels regularly
• Clean frequently touched toys and surfaces
• Wash your hands after applying eye drops or cleaning discharge

When can my child return to school or daycare?

Children do not universally need 24 hours of antibiotic drops before returning to school or daycare.

If your child:

• Has a fever
• Feels too sick to participate normally
• Cannot avoid close contact with others because of symptoms

it is reasonable to keep them home.

Otherwise, return policies vary between schools, childcare programs, and local health departments.

Some programs may still have their own rules about conjunctivitis or antibiotic treatment.

Check your child's school or daycare policy.

Caring for pink eye at home

For uncomplicated conjunctivitis:

Clean the discharge

Gently wipe away crusting with a clean cloth or cotton pad moistened with warm water.

Wipe from the inner corner outward and use a clean area of the cloth each time.

Cool compresses

A cool compress can soothe:

• Burning
• Itching
• Irritation
• Mild eyelid swelling

Artificial tears

Lubricating eye drops may help soothe watery or irritated eyes.

Use products appropriate for your child's age and avoid “redness relief” drops unless your child's clinician specifically recommends them.

Do not share leftover eye drops

Do not use:

• Eye drops left over from a previous illness
• Another child's prescription
• Someone else's eye medication

Different eye problems require different treatment, and contaminated bottles can spread infection.

When are antibiotic drops helpful?

Antibiotics treat bacterial conjunctivitis.

They do not treat:

• Viral conjunctivitis
• Allergic conjunctivitis
• Irritation from smoke, chemicals, or other noninfectious causes

Many mild bacterial infections improve without treatment.

Your child's clinician may recommend antibiotic drops or ointment when bacterial conjunctivitis is likely, symptoms are significant, the child is at higher risk for complications, or treatment is otherwise appropriate based on the examination.

If antibiotics are prescribed, use them exactly as directed.

When should I call the doctor?

Contact your child's clinician if:

• Thick pus-like discharge repeatedly returns after cleaning
• Symptoms are worsening rather than improving
• Symptoms are not beginning to improve after several days
• The eye becomes increasingly red
• Your child has significant eyelid swelling
• You are unsure whether the problem is conjunctivitis or another eye condition

Newborns

A newborn with a red, watery, or discharging eye needs prompt medical evaluation.

Conjunctivitis in newborns can have causes that require specific treatment and should not simply be watched at home.

When should I seek urgent medical care?

Seek prompt or urgent evaluation if your child has:

• Significant eye pain
• Pain when moving the eye
• Marked sensitivity to light
• Blurred or decreased vision that does not clear after discharge is wiped away
• A bulging eye
• Difficulty moving the eye normally
• Double vision
• Significant redness and swelling around the eye, especially with fever
• Severe headache or vomiting with eye swelling
• A blistering rash involving the eyelid, forehead, or tip of the nose
• An eye injury
• Chemical exposure to the eye
• A very ill appearance

These symptoms can indicate a problem more serious than routine pink eye, such as a corneal infection or infection involving the tissues around the eye.

If a chemical gets into the eye, begin rinsing the eye immediately with clean lukewarm water and seek medical guidance.

The bottom line

Most childhood pink eye is mild and improves without complications.

The most important things for parents to remember are:

• Viral pink eye does not benefit from antibiotics.
• Mild bacterial conjunctivitis can sometimes improve without antibiotic drops.
• Very itchy, watery symptoms in both eyes are more suggestive of allergies.
• Discharge color alone cannot reliably tell you the cause.
• Children do not universally need 24 hours of antibiotics before returning to school or daycare.
• Contact-lens wearers with a red, painful, light-sensitive, or blurry eye need prompt evaluation.
• Significant pain, light sensitivity, vision changes, bulging of the eye, or severe swelling around the eye are not typical simple pink eye and need medical attention.
• A newborn with a red or discharging eye should be evaluated promptly.

When you are unsure whether your child's eye symptoms are routine or something more serious, having the eye examined is always reasonable.