Why Does One Eye Keep Watering?

If only one eye keeps watering, possible causes include dry eye, irritation, an eyelid problem, poor tear drainage or an eye infection.

Sometimes the cause is minor and temporary. But if one eye waters repeatedly, lasts for several days or comes with pain, discharge, blurred vision or swelling, an eye examination can help identify the cause.

Quick Answer

It is surprisingly common for one eye to water more than the other.

You may notice that your left eye constantly fills with tears while your right eye feels completely normal.

Or it may be the other way around.

Naturally, you start wondering:

“Why is only one eye affected?”

Your two eyes do not always develop the same problem at the same time.

Something affecting the surface of one eye, its eyelid or its tear drainage system can cause watering on just that side.

The important question is not simply which eye is watering.

It is why it is watering.

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Why Does Only One Eye Water?

Your eyes continuously produce tears to keep their surface comfortable and protected.

Those tears normally drain through small openings near the inner corners of your eyelids.

If one eye produces extra tears or the tears from that eye do not drain properly, they may overflow onto your cheek.

This can happen because of:

• Dry eye
• Irritation
• Poor tear drainage
• Eyelid problems
• Allergies
• Infection
• Something trapped in or irritating the eye

Why Is Only My Right Eye Watering?

There is usually nothing special about the right eye itself that makes it more likely to water.

If only your right eye is watering, something may simply be affecting that eye more than the left.

Possible causes include:

• Dryness or irritation
• An eyelash or small particle irritating the eye
• An eyelid problem
• Poor tear drainage
• Allergy affecting one eye more strongly
• Infection or inflammation

If the right eye keeps watering repeatedly, an examination can help determine the reason.

Why Is Only My Left Eye Watering?

The same principle applies to the left eye.

One-sided watering does not automatically mean something serious.

However, if your left eye waters every day or the problem keeps returning, it is worth checking for dry eye, irritation, eyelid problems and tear drainage issues.

1. Poor Tear Drainage or a Blocked Tear Duct

One possible cause of constant watering is a problem with tear drainage.

Your tears normally drain through small openings near the inner corner of the eyelids.

If this drainage pathway becomes narrowed or blocked, tears may not drain efficiently.

Instead, they can overflow onto the face.

You may also notice:

• Persistent tearing
• Sticky discharge
• Repeated irritation or infection
• Swelling near the inner corner of the eye

An eye examination can help determine if poor drainage may be contributing.

2. Dry Eye Disease

It sounds contradictory, but dry eyes can sometimes cause excessive watering.

When the surface of the eye becomes dry or irritated, your eyes may respond by producing extra reflex tears.

These tears can overflow even though the underlying problem is dryness.

Dry eye may affect one eye more noticeably than the other.

You may also experience:

• Burning
• Grittiness
• Redness
• Fluctuating or blurry vision
• Tired or heavy eyes

If dryness is part of your symptoms, you may also find our article about why your eyes feel heavy all the time helpful.

3. Something Is Irritating the Eye

Your eye naturally produces extra tears when something irritates its surface.

Possible irritants include:

• Dust
• Smoke
• An eyelash
• Wind
• Small particles
• Makeup or skincare products

Sometimes the irritant is tiny and difficult to see.

If you feel as though something is inside the eye and the watering continues, avoid repeatedly rubbing it.

4. An Eyelid Problem

Your eyelids do more than open and close.

They help spread tears across the surface of your eyes and guide those tears toward the drainage openings.

If the eyelid is not sitting in its normal position or is inflamed, tears may not drain correctly.

This can lead to repeated watering.

If watering comes with puffiness or eyelid swelling, see our guide on why your eyelids may be swollen when you wake up.

5. An Eye Infection or Inflammation

An infection or inflammation can also make one eye water.

Other symptoms may include:

• Redness
• Pain or discomfort
• Discharge
• Swelling
• Sensitivity to light
• Sticky eyelids

Watering alone does not confirm an infection.

The other symptoms and examination findings help determine the cause.

6. Allergies

Allergies commonly affect both eyes, but sometimes one eye becomes more irritated than the other.

You may notice:

• Watering
• Itching
• Puffiness
• Redness
• Irritation

Dust and dry weather can make these symptoms worse.

If you notice watering mainly during dusty Abuja weather, our Abuja Harmattan and Your Eyes guide explains how dust, dry air and irritation can affect the eye surface.

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Can Dry Eye Cause Just One Eye to Water?

Yes.

Dry eye does not always affect both eyes equally.

One eye may have a less stable tear film or be exposed to more irritation than the other.

When that eye becomes dry, it may produce excessive reflex tears.

This is why a watery eye is not always a “wet” eye in the healthy sense.

Sometimes watering is the eye's reaction to dryness.

Can a Blocked Tear Duct Make One Eye Water?

Yes.

If the drainage pathway from one eye becomes narrowed or blocked, tears can build up and overflow.

This is one reason persistent watering affecting just one eye should be assessed rather than repeatedly treated with random eye drops.

Why Is My Eye Watering but Not Red?

Not every cause of watering produces obvious redness.

A watery eye without redness may occur with:

• Dry eye
• Mild irritation
• Poor tear drainage
• Wind or cold-air exposure

The absence of redness does not tell us the exact cause.

If the watering persists, an examination is more useful than trying to diagnose it from that symptom alone.

Why Does One Eye Water More Outside?

If your eye waters mainly outdoors, possible triggers include:

• Wind
• Dust
• Cold air
• Bright sunlight
• Dry environmental conditions

These factors can irritate the eye surface and stimulate extra tear production.

This may be especially noticeable if your eyes are already dry or sensitive.

Why Does One Eye Water in Wind or Cold Air?

Wind and cold air can make tears evaporate more quickly from the eye surface.

The eye may respond by producing additional tears.

If one eye is slightly drier or more sensitive than the other, that eye may water more noticeably.

Can Watery Eyes Cause Blurry Vision?

A layer of excess tears across the surface of the eye can sometimes make vision temporarily blurry.

The vision may clear again after blinking or wiping away the tears.

However, repeated or persistent blurry vision should not automatically be blamed on watering.

If you often notice temporary blur, our guide on why you may wake up with blurry vision explains several other possible causes of fluctuating vision.

When Should One Watery Eye Be Checked by an Optometrist?

Arrange an eye examination if:

• One eye waters every day
• The problem continues for several days
• The watering repeatedly returns
• Your vision becomes blurry
• You notice discharge
• The eyelid becomes swollen
• The eye becomes painful
• The problem is affecting work, driving, reading or everyday activities

Persistent watering is often manageable once the underlying cause is identified.

If you are unsure what a full eye examination involves, you can also read our guide to eye test prices and what is included in an eye examination in Abuja.

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When Is a Watery Eye an Emergency?

Seek urgent medical assessment if watering occurs together with:

• Severe eye pain
• Sudden loss of vision
• A significant eye injury
• Chemical exposure to the eye
• Severe redness with marked sensitivity to light
• Sudden significant vision changes

These symptoms need more urgent assessment than uncomplicated watering.

Should I Use Eye Drops for a Watery Eye?

That depends on the cause.

Different eye problems require different treatment.

For example, watering caused by dry eye is not managed in exactly the same way as watering caused by infection, allergy or poor tear drainage.

Using random eye drops without knowing the cause may not solve the problem.

If watering continues, an examination is the better next step.

What Happens During an Eye Examination?

At Blossom Vision Eye Clinic, we look for the reason one eye is watering rather than treating the symptom alone.

Depending on your symptoms, your examination may include:

• Vision testing
• Tear film assessment
• Examination of the eyelids
• Assessment of the front surface of the eye
• Evaluation for irritation or inflammation
• Assessment of overall eye health

If necessary, your optometrist can recommend the appropriate next step based on what is found.

How We Help at Blossom Vision Eye Clinic, Abuja

Constantly wiping tears from one eye can be frustrating.

At Blossom Vision Eye Clinic in Games Village, Abuja, our optometrists take time to understand your symptoms and examine your eyes carefully.

The aim is to identify the likely cause of the watering and explain what should happen next.

If you would like to understand our clinic and services before booking, visit the Blossom Vision Eye Clinic.

Key Takeaways

• One watery eye is a common complaint.
• Dry eye can surprisingly cause excessive watering.
• Problems with tear drainage can affect one eye.
• Irritation, allergies and eyelid problems can also contribute.
• Right-eye and left-eye watering can have similar causes.
• Persistent one-sided watering deserves an eye examination.
• Treatment depends on identifying the cause rather than simply stopping the tears.

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Frequently Asked Questions

Why is only one of my eyes watering?

Possible causes include dry eye, irritation, poor tear drainage, eyelid problems, allergies or infection.

Why is only my right eye watering?

Something may be irritating the right eye or affecting its surface, eyelid or tear drainage system. If it keeps happening, an eye examination can help identify the cause.

Why is only my left eye watering?

The same causes that affect the right eye can affect the left eye, including dry eye, irritation, allergy, eyelid problems and poor tear drainage.

Can dry eyes cause one eye to water?

Yes. Dryness can trigger reflex tearing, and one eye may be affected more noticeably than the other.

Can a blocked tear duct make one eye water?

Poor tear drainage can cause tears from one eye to overflow rather than drain normally.

Why does my eye water more outside?

Wind, dust, cold air and bright sunlight can irritate the eye surface and stimulate extra tear production.

Should I use eye drops?

It depends on the cause. If the watering continues, it is better to have the eye assessed before repeatedly using different eye drops.

When should I see an optometrist?

Arrange an eye examination if one eye keeps watering for several days, repeatedly returns, affects your daily activities or is associated with blurred vision, pain, discharge or swelling.

Stop Living With a Constantly Watery Eye

If one eye keeps watering, you do not have to simply keep wiping it and hoping it stops.

The first step is finding out why it is happening.

At Blossom Vision Eye Clinic in Games Village, Abuja, we can examine your eyes, explain the likely cause and recommend the appropriate next step.

Book your comprehensive eye examination today.

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