A blocked tear duct is the most common lacrimal problem in newborns, affecting up to 1 in 5 babies. Most resolve on their own within the first year of life — but when they do not, a brief surgical procedure under anaesthetic is safe, quick, and highly effective.
Why do babies get blocked tear ducts?
Congenital nasolacrimal duct obstruction (CNLDO) is the most common lacrimal problem in newborns, affecting approximately 6–20% of babies. The vast majority of cases result from an incomplete opening in a thin membrane (Hasner's valve) at the lower end of the nasolacrimal duct where it enters the nasal cavity. This membrane, which normally ruptures around the time of birth, remains intact or partially open.
The condition is usually noticed in the first few weeks of life when parents observe one or both eyes watering, a discharge that makes the lashes sticky (particularly in the morning), and occasional mild redness of the lids. Importantly, the white of the eye remains white — if the sclera is red, the child has conjunctivitis rather than (or as well as) a blocked duct.
Most parents notice the eye watering from around 2–4 weeks of age. It is often intermittent at first — worse in wind, cold, or bright light — before becoming more constant.
Will a blocked tear duct resolve on its own?
Yes — in most cases. Studies show that approximately 90% of blocked tear ducts in newborns resolve spontaneously by 12 months of age without any surgical intervention. The membrane at the lower end of the duct gradually thins and ruptures as the duct continues to mature.
During this watchful waiting period, parents are advised to:
Clean the lids gently with cooled boiled water and cotton wool, wiping from the inner corner outward, to remove discharge without introducing infection.
Perform lacrimal sac massage (Crigler technique): placing a clean fingertip at the inner corner of the eye and applying firm downward pressure to compress the lacrimal sac and push fluid into the duct. Done 5–10 times, 2–3 times daily, this hydrostatic pressure may help open the membrane. The evidence for massage is debated but it is widely recommended as a safe first-line measure.
Apply topical antibiotic drops or ointment (prescribed by your GP or optometrist) if there is significant discharge or signs of infection, though this treats the secondary bacterial colonisation rather than the underlying obstruction.
If the eye has not resolved by 12 months, intervention is appropriate. The longer a blocked duct persists, the less likely it is to resolve spontaneously, and the risk of recurrent dacryocystitis (infection of the lacrimal sac) increases.
What is lacrimal probing?
Lacrimal probing is a brief procedure (typically 5–10 minutes) in which a fine metal probe is passed through the punctum, along the canaliculus, through the lacrimal sac and into the nasolacrimal duct to open the obstructing membrane. It is performed under general anaesthetic in children.
The procedure is highly effective when performed by a surgeon experienced in paediatric lacrimal surgery. Success rates are approximately 90% for a first probing in children under 18 months, declining somewhat for older children in whom the obstruction may be more fibrous.
Following probing, a brief course of antibiotic eye drops is prescribed. Most children show improvement within days — the eye stops watering, the discharge resolves, and lashes stop sticking. There is usually no visible wound and children recover very quickly from the anaesthetic.
In some cases, particularly where the duct is narrow rather than simply obstructed by a membrane, or where probing has already been performed once without success, silicone intubation is performed at the same time. A fine silicone tube is passed through the entire lacrimal system from punctum to nasal cavity and left in place for 2–3 months before being removed in clinic.
When should probing be done?
The timing of intervention remains an area of professional discussion. The traditional approach has been to wait until 12–13 months of age, given the high spontaneous resolution rate before then. This avoids an unnecessary general anaesthetic for the 90% who will resolve without it.
However, earlier probing (at 9–12 months) may be appropriate in certain situations:
Recurrent acute dacryocystitis: if the child has had one or more episodes of acute lacrimal sac infection (red, swollen, tender mass at the inner corner of the eye, with systemic upset), early probing reduces the risk of further infection and abscess formation.
Dacryocoele (lacrimal sac mucocoele): a bluish swelling at the inner corner of the eye present from birth requires prompt management and often early probing, occasionally in the neonatal period.
Significant quality of life impact: persistent watering affecting the child's vision, skin excoriation from constant wiping, or parental distress from managing repeated infections may justify earlier intervention.
The decision is discussed jointly with parents at consultation, taking into account the child's age, history, and parental preference.
What happens at the consultation?
Mr Mohyudin's paediatric lacrimal assessment includes a full examination of both eyes in the child, looking at the puncta (are they present and open?), eyelid position, any swelling at the lacrimal sac, and the presence of reflux when the sac is compressed. The pattern of symptoms and any episodes of infection are reviewed.
In older toddlers, the dye disappearance test can be performed: fluorescein dye is placed in the eye and, if the duct is open, the dye clears from the eye surface within five minutes. If it remains, the duct is obstructed.
Mr Mohyudin will explain whether watchful waiting, continued conservative management, or surgical probing is recommended, and will answer all parental questions. For children who need probing, all procedures are carried out at Spire Elland Hospital by an experienced paediatric anaesthetic team.
Lacrimal probing in Yorkshire with Mr Mohyudin
Mr Mohamed Mohyudin has fellowship training in paediatric ophthalmology and specifically manages paediatric lacrimal conditions. His practice at Spire Elland Hospital (Elland, West Yorkshire) serves families from Halifax, Huddersfield, Bradford, Wakefield, and across the wider Yorkshire region.
Private paediatric lacrimal consultations allow prompt assessment — children with blocked tear ducts are typically seen within one to two weeks. If surgical probing is recommended and consented, this is usually arranged within a further two to four weeks, avoiding the prolonged NHS waits that can see children reach 18 months or older before being treated.
To book a consultation for your child, call Spire Elland Hospital on 01422 324000 or email mnmohyudin@doctors.org.uk. A GP referral letter is helpful but not mandatory for a self-pay appointment.
Frequently Asked Questions
My baby's eye is sticky but not red — is it conjunctivitis or a blocked duct?
Blocked tear duct causes watering and sticky discharge (from secondary bacterial colonisation in the stagnant tear pool) but the white of the eye remains white. Conjunctivitis causes redness of the conjunctiva (the white becomes pink or red). These can occur together, and if the sclera is red your GP should be seen promptly. A blocked duct that shows only watering and discharge without redness can generally be managed conservatively initially.
Is lacrimal probing safe?
Yes. Lacrimal probing is a very well-established, brief procedure with a very low risk of complications. The main considerations are the use of a short general anaesthetic, which carries a very small risk in healthy children but is well managed by experienced paediatric anaesthetic teams. Serious complications from the probing itself (such as damage to the canaliculus) are rare when performed by an experienced surgeon.
What if probing doesn't work?
A small proportion of children — more commonly older children, those with more fibrous obstruction, or those with additional narrowing of the duct — do not respond completely to probing. Options include a repeat probing, probing with silicone intubation (a fine tube left in the duct for several months), or — rarely, in older children with failed repeated procedures — a DCR (dacryocystorhinostomy) to create a new drainage pathway.
Can both eyes be treated at the same time?
Yes — if both eyes have blocked tear ducts, both can be probed during the same general anaesthetic, which avoids the need for two separate procedures and two anaesthetics.
Will my child need glasses after the procedure?
Lacrimal probing does not affect vision or the need for glasses. However, it is good practice to have a child's vision and refraction (glasses prescription) checked by an optometrist at around 3 years of age, and sooner if there are any concerns about vision, squint or lazy eye.
Mr Mohamed Mohyudin
MBChB BSc MSc FRCOphth CCT — Consultant Ophthalmic Surgeon, Spire Elland Hospital, Yorkshire. GMC 7039600.
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