Your baby has one eye that waters all the time. There is a wet track down that cheek, a crust on the lashes at every waking, and no obvious reason for any of it.
For a lot of newborns, the explanation is a tear duct that has not opened yet. It is one of the more common eye findings in the first months of life, and in most babies it sorts itself out.
That said, a watery, gunky infant eye is not something to diagnose from a phone screen. What follows is background so you know what you are looking at and what to ask, with the actual call left to your pediatrician or an eye doctor who sees children.
What is blocked, and why
Tears are not only for crying. Your baby's eyes make them constantly to stay wet and clean, and the used tears have to drain away.
They leave through two tiny openings at the inner corner of each eye, travel down a small channel beside the nose, and empty into the back of the nose. That is why a hard cry makes a nose run.
At the bottom of that channel is a thin flap of tissue that is supposed to open around the time a baby is born. In some babies it stays closed a while longer. Tears then have nowhere to go, so they back up and spill over the lid instead. Less often the problem is at the top, where the drainage openings themselves are very narrow, or the channel is affected by the shape of the surrounding bones.
What parents usually notice
The picture is fairly consistent, and it often shows up in the first weeks:
- A constantly wet eye, sometimes with tears running down the cheek even when the baby is calm
- Tears pooling along the lower lid so the eye looks glassy
- White or pale yellow discharge gathering at the inner corner
- Crusted lashes after naps and overnight, sometimes sticking the lids together
- Mildly pink or chapped skin on the lid and cheek from constant wetness
- One eye affected far more than the other, though both can be involved
What you generally do not see is a baby in distress. A blocked duct is not painful, and the eye itself usually looks white and comfortable underneath the mess.
Blocked duct, or an infection?
This is the question parents most want answered, and it is a fair one, since the two can look similar from across a room.
The rough distinction a clinician makes is between a plumbing problem and an inflamed eye. With a blocked duct, the discharge collects in the corner and the white of the eye stays white. With conjunctivitis, the white of the eye itself turns pink or red, and there is often more discharge, more swelling, and a baby who seems bothered.
The two also overlap. Stagnant tears can become infected, so a baby with a long-standing blockage can develop an infection on top of it. That is one reason a real examination beats guessing.
What a doctor typically shows parents
Most babies with a simple blockage are managed with watchful waiting rather than anything dramatic. At a visit, a doctor will usually confirm what is going on, rule out other causes, and then walk you through day-to-day care.
That normally covers two things. The first is gentle hygiene: wiping the crust and discharge away with something clean and damp, using a fresh wipe for each eye and each pass, so you are not moving material back and forth.
The second is a light massage over the tear sac at the inner corner of the eye, which is thought to encourage the blocked flap to open. This is worth learning in person rather than from a video. A doctor or nurse will show you exactly where to place your finger, how much pressure to use, and how often, and will check that you have it right before you go home. Pressure in the wrong spot does nothing useful, so ask them to watch you try it.
If an infection is present, a doctor may prescribe something for it. Do not put drops, breast milk, saline or home remedies into a baby's eye on your own initiative. Ask first, every time.
When it clears, and when a procedure is discussed
The reassuring part is that most blocked tear ducts open on their own during the first year, often within the first several months, with nothing more than time and clean lids.
When it does not clear, or when a baby keeps getting infections, an eye doctor may suggest a small procedure. The usual first step is probing, in which a very fine instrument is passed through the channel to open the blockage. It is quick, and in young children it is generally done with anesthesia so the child stays still.
If probing alone is not enough, the options include gently widening the passage with a small balloon, or leaving a soft tube in place for a few months to keep the channel open. Your doctor will talk through timing, since there is a balance between letting nature take its course and not letting repeated infections drag on.
Signs that need a call today
Call your pediatrician or seek care the same day if you notice:
- A red, swollen, tender lump at the inner corner of the eye
- Fever, or a baby who is unusually sleepy or hard to settle
- Heavy yellow-green discharge, or lids swollen enough to close the eye
- Redness spreading across the lid or onto the cheek
- Blood-tinged tears
- Any discharge in a newborn in the first days of life
Common questions
Will it come back after it opens?
Once the channel is open, most children have no further trouble. Talk to your doctor if watering returns later, since the cause may be different.
Can both eyes be blocked?
Yes. It often affects one side, but both ducts can be involved, and one may open before the other.
Does a blocked duct hurt my baby's vision?
A simple blockage does not damage sight. Persistent watering still deserves a look, because a few other conditions can cause a watery infant eye and need different attention.
Trust your instincts here. A wet eye that is otherwise calm can usually wait for a routine visit, while a swollen, red or painful one should not. When it is time to book, you can look up an eye doctor near you who takes your family's plan and get your questions answered in person.