My Baby Has an Eye Infection
The short answer
Eye infections in babies can be bacterial, viral, or caused by a blocked tear duct. Bacterial conjunctivitis causes thick yellow or green discharge and may need antibiotic eye drops. Viral conjunctivitis causes watery discharge and resolves on its own. Keep the eye clean with warm damp cotton balls, wiping from inner to outer corner. Any eye infection in a newborn under 4 weeks needs urgent medical evaluation.
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By Age
What to expect by age
Eye infections in newborns (neonatal conjunctivitis) can be serious and require urgent evaluation. Infections can be caused by bacteria acquired during birth (including chlamydia and gonorrhea) or later exposure. Any redness, swelling, or discharge from a newborn's eye should be seen by a doctor within 24 hours. Blocked tear ducts are also common at this age and can mimic infection.
The most common cause of eye discharge at this age is a blocked tear duct, not infection. A blocked tear duct causes watery eyes and mild mucus but without redness or true pus. If the eye is red with thick green or yellow discharge, this is likely bacterial conjunctivitis requiring antibiotic drops. Clean the eye before applying drops for best effectiveness.
Bacterial conjunctivitis often accompanies ear infections or colds in this age group. Your pediatrician may prescribe antibiotic eye drops or ointment. Apply drops by pulling down the lower eyelid gently and placing the drop in the pocket created. If using ointment, apply a thin ribbon along the inner lower lid. Wash hands thoroughly before and after treatment.
Conjunctivitis spreads easily in daycare settings. If your toddler has pink eye, they may need to stay home for 24 hours after starting antibiotic drops (check with your daycare). Wash hands frequently, use separate towels, and wash bedding. Viral conjunctivitis does not require antibiotics and typically resolves in 5-7 days.
Older toddlers may rub their eyes, spreading infection from one eye to the other. Teach hand hygiene and try to discourage eye rubbing. Allergic conjunctivitis (itchy, watery eyes) becomes more common at this age and is treated differently from infectious conjunctivitis. Your pediatrician can help distinguish between the types.
What Should You Do?
When to take action
- A minor eye discharge that is clear or slightly white, especially upon waking, which clears with gentle cleaning
- Watery eyes from a known blocked tear duct without redness or thick discharge
- Mild redness that resolves within 24 hours without treatment
- Your baby has yellow or green eye discharge that persists for more than 24 hours
- One or both eyes are red with discharge and you want to determine if antibiotics are needed
- Your baby's blocked tear duct seems to be getting worse or keeps recurring
- A newborn under 4 weeks has any eye redness, swelling, or discharge
- Your baby has severe eye swelling, cannot open the eye, has a fever with eye symptoms, or has swelling extending to the skin around the eye (possible periorbital cellulitis)
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
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Related Medical Concerns
Baby Pink Eye (Conjunctivitis)
Pink eye (conjunctivitis) is an inflammation of the clear membrane covering the white of the eye and the inner eyelids. In babies it can be caused by viruses, bacteria, allergens, or irritants. Bacterial pink eye causes thick yellow-green discharge and is treated with antibiotic eye drops. Viral pink eye causes watery discharge and resolves on its own. In newborns under 28 days, pink eye can be more serious and always requires medical evaluation.
Pink Eye (Conjunctivitis) - Viral vs. Bacterial
Pink eye (conjunctivitis) is very common in babies and toddlers. The three main types are: viral (most common - watery discharge, often accompanies a cold, resolves on its own), bacterial (thick yellow/green discharge, may mat the eye shut overnight, usually needs antibiotic eye drops), and allergic (itchy, watery, both eyes, seasonal). The key difference: viral conjunctivitis has watery, clear discharge while bacterial has thick, colored discharge. Both viral and bacterial are highly contagious and spread easily in daycare settings. Good hand washing is the best prevention.
Yellow or Green Eye Discharge in Baby
Yellow or green eye discharge in babies is very common, especially in newborns. The most frequent cause is a blocked tear duct (dacryostenosis), which affects up to 20% of newborns and usually resolves on its own by 12 months. Bacterial conjunctivitis (pink eye) is another common cause that produces thicker, more colored discharge. Simple blocked tear duct discharge tends to be milder and does not cause redness of the eye itself.
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My Baby's Head Shape Looks Abnormal
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Achondroplasia (Dwarfism) in Babies
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