GUIDE · คู่มือ

Blocked Tear Duct in Babies: Watery Eyes, Discharge, Home Care

Blocked Tear Duct in Babies: Watery Eyes, Discharge, Home Care

Watery eyes and crusty discharge look alarming — but most of the time it's not an infection. NHS: "It usually gets better by the time they're a few weeks old."

Your newborn's eyes are wet all the time. They wake up with yellow crust stuck in their lashes. Many parents panic, thinking the baby has an eye infection. The truth: it's usually a blocked tear duct — a very common condition in newborns and young infants.

NHS [2] puts it directly: "Babies sometimes have watering eyes because their tear ducts have not fully developed. It usually gets better by the time they're a few weeks old."

This guide draws on AAP HealthyChildren [1] and NHS [2] — what a blocked tear duct is, how to care for it at home, and when to see a doctor.

What a blocked tear duct is

Each eye has a small tear duct (nasolacrimal duct) that drains tears from the eye into the nose. In newborns, that duct is sometimes not yet fully open, so the tears the eye produces have nowhere to drain — they overflow at the corner of the eye instead.

AAP [1] describes the symptoms directly:

"the eyes overflow with tears and collect mucus."

What you'll see:

  • Tears overflowing even when your baby isn't crying
  • Yellow or pale-green crusty discharge at the corner of the eye, especially after waking
  • Lashes sometimes stuck together with discharge
  • Often only one eye is affected, but it can be both
  • The white of the eye isn't red — your baby isn't fussing or rubbing the eye

How common is it

Around 5–20% of newborns have a blocked tear duct at some point. It typically shows up in the first 2–3 weeks and resolves on its own by age 6–12 months.

Home care

1. Clean the discharge regularly

  • Use a fresh cotton ball dipped in cooled, boiled water (or saline solution made for babies)
  • Wipe gently from the inner corner outward — one direction
  • Use a new cotton ball each time, and a new one for each eye (so you don't transfer infection)
  • As often as needed — morning, midday, before bed

2. Massage the tear duct

AAP [1] recommends:

"Gentle massage of the tear duct can help relieve the blockage."

Massage helps the duct open faster — but it has to be done at the right spot with the right pressure. Ask your pediatrician or a nurse to demonstrate the technique at the first visit, rather than copying a random YouTube video that might press the wrong spot.

The general principle pediatricians teach:

  • Wash your hands
  • Use a pinkie or index finger with a short nail
  • Press gently at the inner corner of the eye (between the corner and the bridge of the nose)
  • Press and stroke downward 3–5 times, 2–3 times a day

Not sure you're pressing the right spot? Ask your pediatrician before starting.

3. Be patient

Most cases clear on their own by age 6–12 months. There's no rush.

What NOT to do

  • No saliva on the eye — the mouth carries bacteria that can cause infection
  • No breast milk in the eye — despite the folk advice, there's no evidence it works, and it can introduce bacteria
  • No adult eye drops — especially medicated drops, which need a doctor's prescription
  • Don't share washcloths or tissues with anyone else
  • No vigorous rubbing or squeezing at the inner corner — risk of injury

Blocked tear duct vs. eye infection — telling them apart

Important — a plain blocked tear duct is not an infection, but it can become one if tears pool and bacteria grow.

Plain blocked tear duct (normal)

  • White of the eye is not red
  • Pale-yellow discharge
  • Baby isn't fussing or rubbing the eye
  • No fever

Eye infection (see a doctor)

  • White of the eye is clearly red
  • Heavy, deep-yellow or green pus
  • Eyelid is swollen or inflamed
  • Baby is crying, rubbing the eye, looks uncomfortable
  • May have a fever

When to see a doctor

NHS [2] and AAP [1] advise seeing a doctor if:

  • Baby is over 12 months and still has symptoms — AAP [1] notes: "a tear duct-probing procedure or surgery may be needed"
  • The white of the eye is red, the eye is swollen, or discharge looks like pus — possible infection
  • Your baby has a fever alongside eye symptoms
  • A white spot or sore on the cornea — this is an emergency
  • The eyelid is swollen shut
  • Your baby avoids light or cries when the eye opens
  • After 3 months of correct cleaning and massage, no improvement

Common myths

"Breast milk in the eye fixes it"

No clinical evidence, and a real risk of introducing bacteria from skin or environment — cooled boiled water or baby saline is the better choice.

"Watery eye = infection, give antibiotic drops"

Most of the time, no — a plain blocked tear duct doesn't need medication. Self-prescribing eye drops is risky and unnecessary; always have a doctor look first.

"We need surgery right away"

Not at all — most cases resolve in the first year. Tear-duct probing is reserved for cases that haven't cleared after 12 months.

Summary

  1. Blocked tear duct is normal — affects 5–20% of newborns, not an infection
  2. Most clear on their own by age 6–12 months
  3. Clean with fresh cotton + cooled boiled water, inner corner outward, new cotton each time
  4. Massage the way your pediatrician shows you, not random clips
  5. Don't use saliva, breast milk, or adult eye drops
  6. See a doctor if: red swollen eye, pus, fever · still affecting your baby past 12 months

It looks more dramatic than it is. Wait it out, clean carefully — clear bright eyes are coming back.

แหล่งอ้างอิง

  1. AAP HealthyChildren — Specific Eye Problems
  2. NHS — Watering Eyes
  3. AAP HealthyChildren — Eye Conditions
  4. Royal Thai College of Pediatricians
  5. Samitivej Hospital Thailand — Patient education