Watery Eyes (Epiphora): Causes and Solutions
What Causes Excessive Tearing
Persistent watery eyes can be more than a minor annoyance. When tears overflow onto your cheeks regularly, a condition known as epiphora (excessive tearing), it may signal an underlying issue with tear production, tear drainage, or the surface of the eye itself. If you have been dealing with eyes that water throughout the day, you are not alone, and we want you to know that effective treatment options are available once we identify the root cause.
Your lacrimal glands (the glands that produce tears) can ramp up tear output in response to irritation. Dry eye disease, allergies, wind exposure, bright light, and foreign bodies on the corneal surface all trigger this protective reflex. The tears produced during reflex tearing are thinner and more watery than the balanced tear film your eyes normally maintain, so they tend to spill over the eyelid margin rather than coat the eye evenly.
Tears normally flow from the eye surface into tiny openings called puncta at the inner corners of the eyelids, travel through the canaliculi (small drainage channels), collect in the lacrimal sac, and exit into the nose through the nasolacrimal duct. A blockage or narrowing at any point along this pathway causes tears to pool and overflow. Epiphora affects up to 20 percent of older adults and can result from nasolacrimal duct obstruction as well as other causes (Clinical data, 2020). Partial obstructions may produce intermittent tearing, while complete blockages often lead to constant watering and sometimes mucous discharge.
The position of your eyelids plays a critical role in directing tears toward the drainage system. Ectropion, where the lower eyelid turns outward, and entropion, where the lid turns inward, both interfere with normal tear flow in different ways. Ectropion prevents tears from reaching the puncta, while entropion irritates the eye surface and stimulates reflex tearing. Excess eyelid skin, known as dermatochalasis, can also alter the lid contour and disrupt tear drainage. Chronic inflammation of the lacrimal sac, called dacryocystitis, can narrow the drainage pathway and cause recurrent tearing along with redness and swelling near the inner corner of the eye.
Watery Eyes as a Sign of Dry Eye
It may seem contradictory, but dry eye disease is one of the most common reasons for excessive tearing. A healthy tear film has three layers: an outer oil layer that prevents evaporation, a middle aqueous layer that nourishes and hydrates, and an inner mucin layer that helps tears adhere to the eye surface. When any of these layers is deficient, the corneal surface dries out and nerve endings become exposed. These nerves send distress signals to the lacrimal gland, which responds by flooding the eye with reflex tears that lack the balanced composition of a normal tear film and overflow rather than resolve the dryness.
If your tearing worsens during activities that reduce blinking, such as reading or using a computer, you may be experiencing dry eye-related reflex tearing. Other clues include a gritty or burning sensation alongside the watering, symptoms that fluctuate with humidity and air quality, and temporary improvement after using lubricating eye drops.
If your eyes water most during concentrated visual tasks, in air-conditioned environments, or on windy days, dry eye may be the primary driver. Our oculoplastic surgeon can perform targeted testing to assess tear film stability and recommend treatments that address the core problem rather than just the symptom of tearing. Conditions such as eyelid twitching can sometimes accompany dry eye and may warrant evaluation as well.
Blocked Tear Ducts and Watery Eyes
After bathing the eye surface, tears enter the puncta, two small openings on the upper and lower eyelids near the nose. They then flow through narrow channels called canaliculi into the lacrimal sac, which sits in a bony groove between the eye and the nose. From there, tears pass through the nasolacrimal duct and empty beneath the inferior turbinate inside the nasal cavity. This is why your nose runs when you cry.
In adults, the nasolacrimal duct most often becomes blocked due to chronic low-grade inflammation that gradually narrows the passage over time. Acquired nasolacrimal duct obstruction affects approximately 3 to 5 percent of adults and is more common in women and older individuals (Cleveland Clinic, 2026). Blocked tear ducts in adults can also result from other causes.
- Previous nasal or sinus surgery
- Facial trauma or fractures near the nose and orbit
- Chronic sinus infections or nasal polyps
- Certain medications, including chemotherapy agents like docetaxel
In infants, a blocked tear duct is usually present from birth and is known as congenital nasolacrimal duct obstruction. This condition affects 5 to 20 percent of newborns and is the most common congenital lacrimal disorder (Mayo Clinic study, PMC, 2019). Most cases resolve on their own within the first year, though some require minor intervention.
A partially blocked duct may cause tearing that comes and goes, often worsening in cold or windy conditions. A fully blocked duct typically produces constant tearing along with mucous or pus collecting in the inner corner of the eye. Pressing gently on the lacrimal sac area may cause discharge to reflux through the puncta, which is a strong indicator of obstruction. If you notice these signs, scheduling an evaluation with our oculoplastic surgeon is a reasonable next step.
How Watery Eyes Are Diagnosed
The evaluation begins with a detailed look at the eyelid position, blink mechanics, and the eye surface under magnification using a slit lamp. This helps identify conditions such as ectropion, entropion, eyelid laxity, conjunctivochalasis, and signs of blepharitis or meibomian gland dysfunction that may be contributing to the tearing. If an eyelid lesion is present near the puncta, it may also be interfering with normal tear drainage.
A small drop of fluorescein dye is placed on each eye, and the examiner observes how quickly the dye clears from the tear film over several minutes. If the dye persists longer on one side, it suggests impaired drainage on that side. This painless test provides a useful screening measure for tear outflow problems.
To directly assess the patency of the tear drainage system, a thin, blunt cannula is placed into the punctum and sterile saline is gently flushed through the canaliculus and into the nasolacrimal duct. If you taste or feel the saline in the back of your throat, the system is open. Resistance or reflux of saline back through the puncta confirms a blockage, and the pattern of reflux helps localize where the obstruction sits.
In more involved cases or when prior surgery or trauma is a factor, dacryocystography (a specialized imaging study of the tear drainage system) or CT imaging may be ordered to map the anatomy in greater detail. These studies help our oculoplastic surgeon plan the most appropriate surgical approach when intervention is needed.
Treatment Options for Watery Eyes
If dry eye disease is driving your reflex tearing, we address it with lubricating drops, anti-inflammatory medications, or in-office procedures targeting meibomian gland health. Treating the underlying dryness often resolves the tearing without any need for surgery. For allergy-related tearing, antihistamine eye drops and avoidance of known triggers are typically the first step.
When ectropion or entropion is causing your watery eyes, a surgical correction can restore proper lid anatomy and tear flow. These procedures reposition the eyelid so that tears are directed toward the puncta as intended. If a droopy eyelid is contributing to altered tear mechanics, that can be addressed at the same time.
When a complete nasolacrimal duct obstruction causes persistent tearing that interferes with daily activities, recurrent infections of the lacrimal sac, or both, surgery is generally the most effective path forward. Dacryocystorhinostomy (DCR) creates a new drainage pathway between the lacrimal sac and the nasal cavity. External DCR achieves success rates of 85 to 95 percent, while endonasal approaches offer 80 to 90 percent success with no external scar (PMC, 2024). For partial blockages, less invasive approaches may be tried first.
Frequently Asked Questions
In some cases, mild epiphora caused by temporary irritation, seasonal allergies, or environmental factors may improve once the trigger is removed. However, watery eyes caused by a structural blockage or chronic eyelid malposition are unlikely to resolve without professional intervention. If your tearing has persisted for more than a few weeks, we recommend scheduling an evaluation to determine the cause.
Watery eyes become more prevalent with age, particularly in adults over 60, as the nasolacrimal duct and surrounding tissues undergo age-related changes. Women are significantly more likely than men to develop acquired nasolacrimal duct obstruction, with a female-to-male ratio of roughly 3 to 4 to 1. Hormonal factors and anatomical differences in the bony nasolacrimal canal may contribute to this disparity.
Keeping the eyelid margins clean, using preservative-free artificial tears, and wearing wraparound sunglasses outdoors on windy days can all help reduce mild tearing. Warm compresses applied to the eyelids for several minutes may also support meibomian gland function and improve tear film stability. These measures are most effective when the tearing is related to environmental irritation or mild dry eye rather than a structural blockage.
Most patients return to normal daily activities within one to two weeks following DCR surgery. Some mild nasal congestion and blood-tinged discharge from the nose are common in the first few days and typically resolve on their own. Our oculoplastic surgeon will schedule follow-up visits to monitor healing and confirm that the new drainage pathway is functioning properly.
Unilateral tearing, where only one eye is affected, often points to a localized cause such as a blocked nasolacrimal duct, an eyelid malposition, or a lesion near the punctum on that side. This pattern is particularly worth evaluating because it suggests a structural issue rather than a systemic condition like allergies. We encourage you to bring it to our attention so we can examine the affected side and determine the appropriate next steps.
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