Blocked tear duct in babies: the persistent sticky eye that is not an infection
If your newborn has a persistently watery or sticky eye but the white of the eye looks perfectly clear and your baby does not seem bothered at all, a blocked tear duct is almost certainly the explanation. It is remarkably common, resolves on its own in most cases, and needs nothing more than a gentle daily massage to help things along. Here is everything you need to know.
What a blocked tear duct is
Tears drain from the eye through two tiny openings on the inner edge of each eyelid, travel along a channel called the nasolacrimal duct, and empty into the nose. In some babies, the thin membrane at the lower end of this duct has not fully opened at birth. Tears then have nowhere to go and pool in the eye, collecting dust and producing a sticky discharge.
This is called congenital nasolacrimal duct obstruction, or dacryostenosis. It affects up to 20% of newborns, making it one of the most common eye conditions in infancy. Having it does not mean anything is wrong with your baby's eyes or vision.
How to recognise it
The signs of a blocked tear duct are consistent:
- A watering eye that always looks slightly wet, sometimes overflowing onto the cheek.
- A clear or white, slightly mucousy discharge that collects in the inner corner of the eye.
- Crusty or sticky discharge in the morning after sleep, when discharge has dried overnight.
- The white of the eye (the sclera) stays completely white and clear.
- Your baby is not bothered by it, is not rubbing the eye, and is not distressed.
One or both eyes can be affected at the same time.
The key difference from conjunctivitis
Parents often worry that a sticky eye means an infection. The single most reliable way to tell the difference is to look at the white of the eye:
With a blocked tear duct, the white of the eye is clear and white. Your baby is comfortable and not troubled by the eye. The discharge is clear or slightly whitish and mucousy, not thick and yellow-green.
With conjunctivitis, the white of the eye looks pink or red, and the discharge is often yellow-green and more obviously purulent. Your baby may be unsettled.
If you are unsure, especially in a baby under 4 weeks old, see your GP. Conjunctivitis in a newborn always needs same-day assessment.
The Crigler massage: how to do it
The NHS recommends a technique called Crigler massage (also sometimes called lacrimal sac massage) to help the membrane at the bottom of the duct open. When done consistently, studies show it improves resolution rates.
Here is how to do it:
- Wash your hands thoroughly and make sure your fingernail is short and smooth.
- Find the small bony area at the inner corner of your baby's eye, where the upper and lower eyelids meet nearest the nose. Beneath the skin here is the lacrimal sac, which collects tears.
- Place the tip of your index finger (or little finger for small babies) firmly on this spot.
- Apply firm, steady downward pressure, stroking smoothly down the side of the nose toward the nostril, 2 to 3 times in one session.
- The pressure should be firm enough to feel the bony ridge but gentle enough not to cause discomfort.
- Wipe away any discharge that appears using cooled boiled water and a fresh piece of cotton wool, wiping from the inner corner outward.
- Repeat 2 to 3 times throughout the day, for example at each nappy change.
Your GP or health visitor can show you this technique if you are not sure you have the right spot.
What to expect over time
Most blocked tear ducts open by themselves during the first year of life. Around 90% resolve without any procedure by 12 months, according to research cited in NHS and NICE guidance. The chances of spontaneous resolution are highest in the early months and gradually decline as the year progresses, which is why consistent massage from early on is worthwhile.
Some babies have a discharge that comes and goes, or seems to clear up and then return. This is normal and does not mean the duct is opening and closing; it reflects variation in tear production and how much debris collects in the duct.
If the duct has not opened by 12 months
If the tear duct is still blocked after your baby's first birthday, your GP will usually refer you to a paediatric ophthalmologist. The standard next step is a procedure called probing, in which a fine probe is passed through the duct under general anaesthetic to open the membrane. It takes only a few minutes, is highly effective, and your baby recovers quickly. Most children go home the same day.
In some cases a balloon dilation or silicone tube stenting may be used instead of or after probing, depending on the anatomy. The ophthalmologist will explain the options at your appointment.
When to see your GP
Contact your GP if:
- The white of the eye becomes pink or red, which suggests an infection on top of the blocked duct.
- The discharge becomes thick, yellow-green, or significantly heavier.
- The eyelid itself becomes swollen, red, or warm.
- Your baby develops a fever alongside the eye problem.
- Your baby is clearly in pain or distress from the eye.
- Your baby is under 4 weeks old and has any eye discharge or redness.
Frequently asked questions
How do I massage my baby's blocked tear duct?
Place a clean fingertip on the bony bump at the inner corner of your baby's eye, then apply firm downward pressure along the side of the nose, 2 to 3 times in one smooth stroke. Repeat 2 to 3 times a day. Clean away any discharge with cooled boiled water and cotton wool, wiping from the inner corner outward.
Will my baby need surgery for a blocked tear duct?
Around 90% of blocked tear ducts resolve on their own by 12 months with regular massage. If it has not opened by the first birthday, a quick probing procedure under general anaesthetic is usually offered and has a very high success rate.
Is my baby's sticky eye an infection or a blocked duct?
Look at the white of the eye. If it stays clear and white, and your baby seems comfortable, a blocked duct is likely. If the white of the eye is pink or red, or the discharge is thick and yellow-green, it is more likely to be conjunctivitis. If in any doubt, see your GP.
How long does a blocked tear duct take to clear?
Most clear by 6 to 12 months with regular massage. Around 90% are resolved without any procedure by the first birthday.
Can both eyes be blocked?
Yes, both ducts can be blocked at the same time. It is less common than a single blocked duct but does happen. Manage each side with the same massage technique.
Should I put breast milk in my baby's eye?
No. The NHS does not recommend breast milk in the eye. There is no clinical evidence it clears a blocked duct or treats conjunctivitis, and it can introduce bacteria. Use cooled boiled water on cotton wool to clean the eye.
Keep a record as things gradually improve
Cubby's health notes make it easy to track your baby's symptoms over weeks so you can see the progress and share it with your GP or health visitor.
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