Why Is My Horse’s Eye Watering?
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Why Is My Horse’s Eye Watering?
By Dr Duncan Houston
A watery horse eye can be mild irritation, but it can also be the first sign of a painful eye emergency.
Tears running down a horse’s face are not just a cosmetic issue. Excessive tearing, also called epiphora, means either the eye is producing too many tears because it is irritated or painful, or the tears are not draining properly through the nasolacrimal duct.
The important question is not simply, “Why is my horse tearing?”
The important question is: is the eye comfortable, clear, open, and normal in appearance?
If your horse is squinting, holding the eye partly closed, has a cloudy cornea, has yellow discharge, is rubbing the eye, or suddenly has one eye streaming tears, do not treat it like a minor annoyance. Horse eye problems can look similar from the outside, but ulcers, uveitis, glaucoma, blocked tear ducts, conjunctivitis, foreign bodies, and tumours all need very different treatment.
Quick Answer
A horse’s eye may water because of irritation, flies, dust, allergies, conjunctivitis, a blocked tear duct, corneal ulcer, foreign body, eyelid injury, uveitis, glaucoma, or a tumour near the eye. Mild clear tearing in an otherwise comfortable horse may be monitored briefly, but tearing with squinting, cloudiness, swelling, discharge, rubbing, or one-sided pain should be treated as urgent. Because equine eye signs are often non-specific, painful horse eyes need prompt veterinary examination. (MSD Veterinary Manual)
How Do Tears Normally Drain From a Horse’s Eye?
Tears are produced to lubricate, protect, and clean the surface of the eye. Normally, they drain from the eye through small openings near the eyelids and travel through the nasolacrimal duct into the nose.
That is why, when a vet places fluorescein dye into the eye, the dye may later appear at the nostril if the tear duct is open.
When this drainage system is blocked, inflamed, narrowed, or compressed, tears overflow down the face instead. This is called epiphora.
But not all watery eyes are blocked tear ducts. A painful eye can also produce excessive tears.
That difference matters.
| Main mechanism | What is happening | Common examples |
|---|---|---|
| Too many tears are being produced | The eye is irritated, inflamed, or painful | Corneal ulcer, foreign body, conjunctivitis, uveitis, flies, dust |
| Tears cannot drain properly | The tear drainage pathway is blocked or narrowed | Nasolacrimal duct obstruction, inflammation, dental or sinus disease, mass effect |
A blocked tear duct is often more chronic. A painful eye is often more urgent.
Why Early Veterinary Assessment Matters
Horse eyes are large, exposed, and vulnerable to trauma. The AAEP notes that horses are particularly vulnerable to ocular trauma because of their large, laterally positioned eyes, and that corneal ulcers are among the common eye conditions caused by trauma. (AAEP)
The tricky part is that many conditions look the same at first.
A watery eye could be mild conjunctivitis. It could also be a corneal ulcer, uveitis, glaucoma, a foreign body, or an eyelid injury. MSD Veterinary Manual notes that clinical signs of ocular disease in horses are non-specific, and that prompt examination is important because accurate diagnosis and fast treatment help preserve the globe and reduce long-term vision impact. (MSD Veterinary Manual)
The mistake I see most often is owners treating a watery eye as “just conjunctivitis” for too long.
Sometimes it is conjunctivitis.
Sometimes it is not.
What Signs Should You Look For?
Excessive tearing can appear as a wet streak down the face, damp hair under the eye, crusting, tear staining, or a constantly wet cheek.
Look closely at the whole eye, not just the tear trail.
| Sign | Why it matters |
|---|---|
| Clear watery discharge | Can occur with irritation, blocked tear duct, early pain, or allergies |
| One eye tearing more than the other | More concerning than both eyes mildly watery |
| Squinting or blinking | Usually indicates pain |
| Eye partly or fully closed | Treat as urgent until proven otherwise |
| Cloudy, blue, white, or yellow cornea | May indicate corneal disease, ulceration, uveitis, glaucoma, or infection |
| Redness | Can occur with conjunctivitis, ulcers, uveitis, trauma, or irritation |
| Yellow or green discharge | May indicate infection or significant inflammation |
| Swollen eyelids | Can hide trauma, foreign material, or deeper disease |
| Rubbing the eye | Can rapidly worsen corneal damage |
| Small pupil | Can occur with uveitis or painful eye disease |
| Enlarged or bulging eye | Concern for glaucoma or chronic disease |
| Persistent scab, lump, or mass near the eye | May require biopsy or specialist assessment |
The most important checkpoint is this: a watery eye that is also painful or cloudy is not a simple tear duct problem until proven otherwise.
How Worried Should You Be?
| Risk level | What it looks like | What it may mean | What to do |
|---|---|---|---|
| Low concern | Mild clear tearing, both eyes affected, horse comfortable, eye open, no cloudiness, no swelling | Dust, wind, flies, mild irritation | Improve environment and monitor closely |
| Moderate concern | One eye watering, mild redness, mild swelling, no squinting, no cloudiness | Conjunctivitis, early irritation, blocked duct, early ulcer | Arrange a vet check if it persists beyond 24 hours or worsens |
| High concern | Squinting, rubbing, cloudy cornea, yellow discharge, eyelid swelling, worsening one-sided tearing | Corneal ulcer, foreign body, uveitis, infection, trauma | Call your vet promptly |
| Critical | Eye held closed, severe cloudiness, visible wound, blood, rapidly worsening swelling, sudden vision change, enlarged eye | Eye emergency, deep ulcer, glaucoma, trauma, severe uveitis | Treat as urgent veterinary care |
A horse that is comfortable with mild clear tearing is one thing.
A horse that is tearing and squinting is a different animal entirely.
Common Causes of Excessive Tearing in Horses
Blocked Tear Duct
A blocked tear duct, or nasolacrimal duct obstruction, is one of the classic causes of chronic tear overflow.
The tear duct can become blocked or narrowed by inflammatory debris, foreign material, infection, trauma, masses pressing on the duct, or nearby sinus or dental disease. MSD Veterinary Manual notes that obstruction of the nasolacrimal sac or duct can result in watering eyes and conjunctivitis that is resistant to treatment. (MSD Veterinary Manual)
Signs may include:
| Sign | What you may notice |
|---|---|
| Chronic watery tear trail | Tears run down the same cheek |
| Clear discharge | Often watery, especially early |
| Mucus or thicker discharge | May occur if inflammation or infection develops |
| Recurrent tearing after treatment | Duct may re-block |
| Wet hair or skin irritation below the eye | Chronic moisture can irritate the face |
| Conjunctivitis that keeps returning | May occur when drainage remains poor |
A blocked tear duct is usually less painful than a corneal ulcer, but it still needs proper diagnosis. If the horse is squinting, cloudy, or painful, look beyond the tear duct.
Corneal Ulcers and Corneal Injuries
A corneal ulcer is a defect or wound on the cornea, the clear front surface of the eye. This is one of the most important causes of tearing because it can be painful and sight-threatening.
Common triggers include hay, grass stems, bedding, dust, foreign bodies, stable trauma, branches, and rubbing.
Typical signs include:
| Sign | Why it matters |
|---|---|
| Sudden tearing | The eye is irritated or painful |
| Squinting | Corneal ulcers are painful |
| Cloudiness | Corneal swelling, infection, or deeper damage may be present |
| Discharge | Infection or inflammation may be developing |
| Light sensitivity | Pain or internal inflammation may be involved |
| Rubbing | Can worsen the ulcer |
Fluorescein stain is commonly used by vets because it adheres to damaged areas of the cornea and helps identify corneal defects. (AAEP)
Small superficial ulcers can often do well with early treatment. Complicated ulcers are very different. MSD Veterinary Manual warns that complicated corneal ulcers in horses require frequent monitoring because they can progress rapidly to perforation. (MSD Veterinary Manual)
That is why a squinting, tearing horse eye is never something to leave for a week.
Foreign Bodies Under the Eyelid
Hay awns, grass seeds, dust, plant material, splinters, and other debris can lodge under the eyelid or against the eye surface.
These cases often look sudden.
The horse may have:
| Sign | What it suggests |
|---|---|
| Sudden tearing | The eye is reacting to irritation |
| Blinking or squinting | Pain or discomfort |
| Rubbing | The horse is trying to remove the irritant |
| Redness | Surface inflammation |
| Corneal scratch | May develop if debris rubs the cornea |
The foreign body may not be obvious unless the eyelids are properly examined. Pulling the eyelids open on a painful horse can be unsafe, so this is a job for a vet with sedation, topical anaesthetic, and appropriate equipment when needed.
Conjunctivitis, Dust, Flies, and Allergies
Conjunctivitis means inflammation of the conjunctiva, the pink tissue lining the eyelids and covering part of the eye.
It can be caused by dust, flies, pollen, allergies, wind, irritants, infection, or another underlying eye condition. AAEP lists conjunctivitis signs as ocular discharge, redness, and swelling, with common causes including allergies and insect hypersensitivity. (AAEP)
Mild conjunctivitis may cause clear tearing, slight redness, and mild swelling without obvious pain.
But conjunctivitis should not be used as a lazy label.
Before assuming it is simple conjunctivitis, vets often need to rule out ulcers, foreign bodies, uveitis, glaucoma, eyelid trauma, and masses.
Uveitis and Equine Recurrent Uveitis
Uveitis is inflammation inside the eye. Equine recurrent uveitis, also called ERU or moon blindness, is a recurring inflammatory disease and a major cause of vision loss in horses.
UC Davis describes ERU as the most common cause of vision loss in horses and notes that it is influenced by genetic and environmental factors, with infectious organisms such as Leptospira associated in some cases. (Center for Equine Health)
Signs can include:
| Sign | Why it matters |
|---|---|
| Tearing | Eye inflammation can trigger tear production |
| Squinting | Pain |
| Cloudy or blue-looking cornea | Corneal oedema or inflammation |
| Small pupil | Common with uveitis |
| Light sensitivity | Painful internal inflammation |
| Recurrent episodes | Suggests ERU rather than a one-off irritation |
MSD Veterinary Manual notes that uveitis signs may include blepharospasm, epiphora, corneal oedema, miosis, aqueous flare, fibrin, hyphema, hypopyon, and low intraocular pressure, with chronic cases potentially developing cataracts, retinal degeneration, retinal detachment, phthisis bulbi, and glaucoma. (MSD Veterinary Manual)
This is why repeated “watery eye” episodes matter. They may be more than surface irritation.
Glaucoma
Glaucoma is increased pressure inside the eye. In horses, it is often associated with underlying uveitis and can cause pain, corneal cloudiness, enlarged globe, and vision loss.
MSD Veterinary Manual states that the key clinical finding of glaucoma is elevated intraocular pressure measured by tonometry. (MSD Veterinary Manual)
Possible signs include:
| Sign | Why it matters |
|---|---|
| Tearing | Pain or irritation |
| Cloudy cornea | Corneal oedema from pressure changes |
| Enlarged eye | More concerning in chronic disease |
| Dilated or poorly responsive pupil | May indicate pressure-related disease |
| Vision change | Glaucoma can damage the optic nerve |
Glaucoma cannot be confirmed by looking at the eye from the paddock. It needs an eye pressure measurement.
Eyelid Injuries
Eyelid cuts and tears are common in horses because they catch eyelids on fences, stable hardware, feeders, branches, and sharp objects.
Even if the eye itself looks intact, eyelid injuries matter because the eyelids protect the cornea and spread the tear film. Poor eyelid function can lead to chronic irritation, ulcers, and tearing.
AAEP notes that eyelid lacerations are commonly traumatic and that, after checking for eye damage, repair often involves sedation, local anaesthetic, and careful closure. (AAEP)
Do not treat eyelid margin wounds like ordinary skin cuts. The eyelid has a job to do.
Tumours and Masses Around the Eye
Persistent tearing can occur when a mass irritates the eye, disrupts eyelid function, blocks tear drainage, or affects the conjunctiva, third eyelid, or medial canthus.
Important possibilities include:
| Condition | Why it matters |
|---|---|
| Squamous cell carcinoma | Important around eyelids, conjunctiva, third eyelid, and pale skin |
| Sarcoid | Common equine skin tumour that can affect eyelids |
| Papilloma | Can occur around eyelids or third eyelid |
| Summer sores | Can mimic tumours near the eye |
| Chronic inflammatory tissue | May develop after trauma or irritation |
A watery eye with a non-healing scab, lump, ulcerated patch, bleeding lesion, or persistent one-sided discharge should not be treated blindly. It may need biopsy.
Foals With Tearing Eyes
Foals deserve a special mention because tearing in a foal can be caused by congenital issues, entropion, corneal ulceration, trauma, blocked or abnormal tear ducts, infection, dehydration, or systemic illness.
A weak, premature, septic, dehydrated, or recumbent foal with eye discharge or tearing is higher risk. In foals, the eye problem may be one visible sign of a bigger neonatal health issue.
If a foal is squinting, not nursing, cloudy-eyed, swollen around the eyelids, or has yellow discharge, call a vet promptly.
What Else Can Look Like a Simple Watery Eye?
A watery eye is a sign, not a diagnosis.
| Looks like | Could actually be |
|---|---|
| “Just tears” | Blocked tear duct, early ulcer, mild irritation |
| “Conjunctivitis” | Ulcer, uveitis, foreign body, glaucoma |
| “Allergies” | Fly irritation, blocked duct, early pain |
| “Dust in the eye” | Corneal scratch, hay awn, foreign body |
| “A tear duct problem” | Painful eye producing excess tears |
| “A small scab” | Eyelid injury, summer sore, sarcoid, SCC |
| “A cloudy cataract” | Corneal oedema, ulcer, uveitis, glaucoma |
| “Old horse eye changes” | Chronic uveitis, glaucoma, vision loss |
The real clinical question is not “is the eye watery?”
It is: why is the eye watery, and is vision or comfort at risk?
How Do Vets Diagnose Excessive Tearing?
A vet will usually work through the problem in a structured way.
| Diagnostic step | What it helps assess |
|---|---|
| History | When it started, whether one or both eyes are affected, trauma risk, prior medication |
| Eye comfort assessment | Squinting, rubbing, head shyness, light sensitivity |
| Close eye exam | Eyelids, cornea, conjunctiva, pupil, discharge, third eyelid |
| Fluorescein stain | Checks for corneal ulcers and may help assess tear drainage |
| Eyelid eversion | Looks for hay, grass, or debris under the lid |
| Nasolacrimal duct patency test | Assesses tear duct drainage |
| Tear duct flushing | May clear or investigate obstruction |
| Tonometry | Measures eye pressure for glaucoma or uveitis clues |
| Slit lamp or ophthalmoscopy | Assesses deeper eye structures |
| Cytology or culture | Used when infection or complicated ulcer is suspected |
| Imaging | May be needed for persistent tear duct obstruction, sinus, dental, or mass concerns |
| Biopsy | Used for suspicious masses or non-healing lesions |
| Referral | Needed for deep ulcers, complex disease, surgery, or specialist ophthalmology |
For suspected tear duct obstruction, MSD Veterinary Manual notes that the duct may be flushed with sterile water or saline, and that skull x-rays after dye injection may be needed to determine the site, cause, and outlook of long-term obstruction. (MSD Veterinary Manual)
Why Fluorescein Stain Matters
Fluorescein stain is one of the most important tools in equine eye assessment.
It can help identify corneal defects, which changes treatment immediately. It may also help assess tear drainage when the dye is expected to pass from the eye to the nostril.
This matters because some medications are unsafe if an ulcer is present. MSD Veterinary Manual states that the cornea should be stained with fluorescein before corticosteroid use, and that corticosteroids are contraindicated when a corneal ulcer is present. (MSD Veterinary Manual)
That is the practical reason owners should not start old eye medication before a vet exam.
How Is Excessive Tearing Treated?
Treatment depends entirely on the cause.
| Cause | Treatment approach |
|---|---|
| Mild dust or fly irritation | Environmental control, fly mask, cleaning, monitor closely |
| Conjunctivitis | Rule out ulcers first, then eye-safe medication and trigger control |
| Blocked tear duct | Duct flushing, treatment of inflammation or infection, imaging if recurrent |
| Corneal ulcer | Topical antibiotics, pain relief, atropine where appropriate, rechecks |
| Deep or melting ulcer | Intensive treatment, culture, anti-collagenase therapy, referral or surgery |
| Foreign body | Removal, staining, medication, recheck |
| Uveitis | Anti-inflammatory treatment, atropine where appropriate, pain control, monitoring |
| Glaucoma | Eye pressure measurement, pressure-lowering medication, anti-inflammatory treatment |
| Eyelid injury | Careful repair, eye protection, infection and pain control |
| Tumour or mass | Biopsy, surgery, cryotherapy, chemotherapy, radiation, or referral depending on type |
Some horses with painful eyes need very frequent medication. In difficult cases, vets may place a subpalpebral lavage system, which allows medication to be delivered to the eye without repeatedly opening the eyelids. MSD Veterinary Manual notes that these systems are often indicated for ocular disease, are generally well tolerated, and can simplify treatment. (MSD Veterinary Manual)
When Is This an Emergency?
Treat excessive tearing as urgent if you see any of these signs:
| Red flag | Why it matters |
|---|---|
| Squinting or eye held closed | Usually means pain |
| Cloudy, blue, white, or yellow cornea | Possible ulcer, oedema, infection, uveitis, or glaucoma |
| Thick yellow, green, or bloody discharge | Infection, trauma, or severe inflammation may be present |
| Rubbing the eye | Can worsen corneal damage quickly |
| Swollen eyelids | May hide trauma, foreign bodies, or deeper disease |
| Visible scratch or wound | Cornea or eyelid margin may be involved |
| Sudden severe one-sided tearing | Painful eye disease must be ruled out |
| Small or abnormal pupil | Can occur with uveitis or internal eye disease |
| Enlarged or bulging eye | Possible glaucoma |
| Sudden vision change | Needs urgent assessment |
| Tearing after eye medication has been started and signs worsen | Treatment may be inappropriate or disease may be progressing |
MSD Veterinary Manual lists eyelid lacerations, corneal ulcers, stromal abscesses, trauma, uveitis, and glaucoma as ophthalmic emergencies in horses, and states that emergent evaluation of painful eyes is always indicated. (MSD Veterinary Manual)
A simple rule: clear tearing with comfort can sometimes wait briefly. Tearing with pain or cloudiness should not wait.
What Should You Do Right Now?
1. Look at the whole eye
Check whether the eye is open, clear, symmetrical, and comfortable. Compare both eyes.
2. Decide whether there is pain
Squinting, blinking, head-shyness, rubbing, or holding the eye closed means the horse is uncomfortable.
3. Look for cloudiness
Blue, white, grey, yellow, or hazy changes to the cornea are concerning.
4. Do not apply leftover medication
Especially avoid old steroid-containing eye drops or ointments. Steroids can be dangerous if a corneal ulcer is present. (MSD Veterinary Manual)
5. Reduce irritation
Move the horse away from wind, dust, sharp branches, rough feeders, and heavy flies where practical.
6. Use a clean fly mask if appropriate
A well-fitting fly mask can reduce flies and rubbing, but it must not press on the eye or hide worsening signs.
7. Take clear photos
Photograph both eyes from the front and side in good light. Include the tear trail, eyelids, and any swelling or lesions.
8. Call your vet if signs are one-sided, painful, cloudy, persistent, or worsening
Mention whether the horse is squinting, whether the cornea is cloudy, whether discharge is clear or coloured, and whether the eye problem started suddenly.
9. Monitor timing
If mild clear tearing persists beyond 24 hours, becomes one-sided, or develops redness, swelling, discharge, cloudiness, or pain, book a vet check.
Common Mistakes Owners Make
Mistake 1: Assuming tears mean a blocked tear duct
A blocked duct is possible, but painful eye disease can also cause tearing.
Mistake 2: Calling every watery eye conjunctivitis
Conjunctivitis is common, but ulcers, foreign bodies, uveitis, glaucoma, and tumours can look similar early.
Mistake 3: Using old eye ointment
Leftover medication may contain steroids or may be inappropriate for the current problem.
Mistake 4: Waiting because the horse is still eating
A horse with a painful eye may still eat. Appetite does not rule out eye pain.
Mistake 5: Ignoring one-sided tearing
One eye streaming tears is more concerning than both eyes mildly watery in dusty or windy conditions.
Mistake 6: Missing eyelid or third eyelid lesions
A small scab, lump, or lesion near the eye can keep causing irritation and may need biopsy.
Mistake 7: Stopping treatment too early
Some ulcers, uveitis cases, and blocked ducts need rechecks and continued treatment even after signs improve.
Normal vs Concerning Tearing
| More reassuring | More concerning |
|---|---|
| Both eyes mildly watery in wind or dust | One eye suddenly streaming tears |
| Horse is bright and comfortable | Horse is squinting or holding eye closed |
| Eye is clear and open | Cornea is cloudy, blue, white, or yellow |
| No swelling | Eyelids are swollen or distorted |
| No rubbing | Horse is rubbing the eye |
| Mild clear discharge | Yellow, green, bloody, or sticky discharge |
| Improves quickly after environmental change | Persists beyond 24 hours or worsens |
| No vision change | Horse bumps into objects or acts visually abnormal |
The line between “monitor” and “call the vet” is usually pain, cloudiness, one-sided severity, and progression.
How To Prevent Eye Irritation and Tearing
You cannot prevent every eye problem in horses, because horses are magnificent animals with a world-class ability to injure themselves on objects you did not know existed.
But you can reduce risk.
| Prevention step | Why it helps |
|---|---|
| Check eyes daily | Early changes are easier to treat |
| Use clean, well-fitting fly masks | Reduces flies and irritation |
| Inspect fly masks | Dirty or rubbing masks can cause problems |
| Reduce dust in hay and bedding | Lowers irritation risk |
| Remove sharp paddock and stable hazards | Reduces eyelid and corneal trauma |
| Manage flies | Reduces conjunctivitis, rubbing, and periocular irritation |
| Treat eyelid injuries promptly | Protects corneal health |
| Monitor horses with prior eye disease closely | Recurrence is common with some conditions |
| Keep records of recurring signs | Helps identify patterns and triggers |
| Seek early checks for persistent tearing | Prevents chronic problems from being missed |
For horses with recurrent uveitis, prior ulcers, glaucoma, eyelid tumours, or repeated duct obstruction, prevention also means faster action whenever early signs return.
Will My Horse Be Okay?
Many causes of excessive tearing can be treated successfully when identified early.
A mild irritant eye may settle with environmental control. A blocked tear duct may improve after flushing and treatment of the underlying cause. A superficial ulcer may heal well with early medication and rechecks. A foreign body may resolve once removed and treated.
The prognosis becomes more guarded when:
| Concern | Why it matters |
|---|---|
| The eye is painful | Pain often means more serious disease |
| The cornea is cloudy | Corneal or internal eye disease may be present |
| The ulcer is deep, infected, or melting | Higher risk of perforation or scarring |
| Uveitis is recurrent | Long-term vision risk increases |
| Glaucoma is present | Can cause chronic pain and vision loss |
| A mass is involved | May need biopsy or specialist treatment |
| Treatment is delayed | More time for permanent damage |
| The horse is difficult to medicate | Inadequate treatment can worsen outcomes |
The earlier the cause is identified, the better the chance of protecting comfort and vision.
FAQs About Excessive Tearing in Horses
Is a watery eye in a horse an emergency?
A mildly watery eye in a comfortable horse with no cloudiness, swelling, discharge, or squinting may not be an immediate emergency. But if the eye is painful, cloudy, one-sided, swollen, or worsening, it should be treated as urgent.
Can a blocked tear duct make a horse’s eye water?
Yes. A blocked nasolacrimal duct can cause tears to overflow down the face. It may be caused by inflammatory debris, foreign material, masses, trauma, or nearby disease. Vets may test drainage and flush the duct with sterile saline or water. (MSD Veterinary Manual)
Why is my horse’s eye watering and cloudy?
Tearing with cloudiness is concerning. Possible causes include corneal ulceration, corneal oedema, infection, uveitis, glaucoma, trauma, or deeper eye disease. This needs veterinary assessment.
Can I use human eye drops on my horse?
Not unless your vet specifically tells you to. Human eye drops may be inappropriate, and steroid-containing medication can be dangerous if a corneal ulcer is present.
What does it mean if only one horse eye is watering?
One-sided tearing is more concerning than both eyes mildly watering. It can indicate a blocked duct, foreign body, corneal ulcer, eyelid injury, uveitis, glaucoma, or a mass near that eye.
The Bottom Line
Excessive tearing in a horse is a sign, not a diagnosis.
Sometimes it is simple irritation. Sometimes it is a blocked tear duct. Sometimes it is an early warning sign of a painful, sight-threatening eye problem.
The most important clues are pain, cloudiness, discharge, swelling, rubbing, one-sided severity, and progression. If the horse is squinting, holding the eye closed, cloudy-eyed, rubbing, or suddenly streaming tears from one eye, do not wait for it to “dry up.” Get the eye examined before a treatable problem becomes a serious one.
If you are unsure whether your horse’s watery eye is mild irritation, a blocked tear duct, an ulcer, uveitis, glaucoma, or an emergency, ASK A VET™ can help you understand what signs matter and when veterinary care is needed.
