Blocked Tear Duct in a Baby: Why One Eye Waters and What Usually Helps

Why blocked tear ducts happen in newborns

Tears drain from the eye through a small channel that runs alongside the nose toward the back of the throat. In many newborns, the lower end of this channel (the nasolacrimal duct) is partially or fully blocked by a thin membrane of tissue that has not yet opened. This obstruction is the most common disorder of the lacrimal system in infants, affecting approximately 5 to 20 percent of newborns 1Ref 1Vagge A, Ferro Desideri L, Nucci P, et al. (2018).Congenital Nasolacrimal Duct Obstruction (CNLDO): A Review.Prevalence of 5–20% of newborns, efficacy of Crigler massage (56% success under 2 months, declining with age), and conservative management as first-line approach.

Tears then pool in the eye and overflow as tearing, and secretions that cannot drain collect as a yellowish or whitish crust, especially noticeable after sleep. The condition becomes visible once the baby's tear glands begin producing tears, usually around three to four weeks of age.

What it looks like — and what it does not look like

A blocked tear duct typically causes: - One eye (sometimes both) that consistently tears or overflows even when the baby is not crying - Yellow or white crusting at the inner corner of the eye, especially in the morning - The whites of the eye (sclera) remain clear and white - The eye itself does not look red or swollen

Conjunctivitis (pinkeye) tends to look different: the white of the eye often looks pink or red, and there may be thicker, more profuse discharge. Orbital cellulitis (infection of the tissue around the eye) causes eyelid swelling, redness, and warmth — a more urgent situation. A provider can help distinguish between these.

Massage that may help the duct open

Many pediatric providers teach parents a simple massage technique (called the Crigler maneuver) that may help open the duct more quickly 1Ref 1Vagge A, Ferro Desideri L, Nucci P, et al. (2018).Congenital Nasolacrimal Duct Obstruction (CNLDO): A Review.Prevalence of 5–20% of newborns, efficacy of Crigler massage (56% success under 2 months, declining with age), and conservative management as first-line approach. The general approach involves applying gentle firm pressure with a fingertip in the area between the inner corner of the eye and the side of the nose, then sweeping downward. Doing this several times a day before feeds is a commonly suggested pattern.

Research suggests that massage is most effective in younger infants — success rates are higher before six months of age than after 1Ref 1Vagge A, Ferro Desideri L, Nucci P, et al. (2018).Congenital Nasolacrimal Duct Obstruction (CNLDO): A Review.Prevalence of 5–20% of newborns, efficacy of Crigler massage (56% success under 2 months, declining with age), and conservative management as first-line approach. A provider or nurse can demonstrate the specific technique in person, which tends to be more helpful than reading a description. Wash hands thoroughly before and after.

What the resolution path usually looks like

For most babies, the blocked duct opens on its own in the first several months of life — the overall spontaneous resolution rate is approximately 90 percent during the first year 2Ref 2American Association for Pediatric Ophthalmology and Strabismus (2024).Nasolacrimal Duct Obstruction.Approximately 90% spontaneous resolution within the first year; probing as the standard intervention for persistent cases after 12 months. Resolution is most common in the first six months. If tearing and crusting persist past about twelve months, a pediatric ophthalmologist may evaluate the baby and discuss options, which can include a brief probing of the duct — a thin wire-like probe is passed through the duct to open the blockage 2Ref 2American Association for Pediatric Ophthalmology and Strabismus (2024).Nasolacrimal Duct Obstruction.Approximately 90% spontaneous resolution within the first year; probing as the standard intervention for persistent cases after 12 months. That procedure is generally very effective and is a conversation for the provider when the time comes; most families never reach that point.