If you're wondering, "Why are my eyes watering?" the answer may surprise you. While allergies, wind, or irritation can cause watery eyes, one of the most common causes is actually dry eye disease.

When your eyes become too dry, they often produce an overflow of poor-quality tears that don't properly lubricate the surface of the eye. This causes your eyes to water even more.

Although watery eyes are often harmless, persistent or recurring tearing can sometimes signal an underlying eye condition that should be evaluated by an optometrist.

What Causes Watery Eyes?

Your eyes are constantly producing tears to keep the surface of your eyes healthy, comfortable, and clear. Normally, excess tears drain through tiny tear ducts in the corners of your eyelids.

Watery eyes occur when:

• Your eyes produce too many tears

• Your tears aren't the right quality

• Your tear ducts don't drain properly

• Something is irritating the surface of your eye

The key is identifying why your eyes are watering.

Quick Symptom Guide

A comprehensive eye exam is the best way to determine the exact cause.

The Most Common Causes of Watery Eyes

1. Dry Eye Disease

Dry eye is one of the leading causes of watery eyes.

When the surface of your eye becomes dry, your body responds by producing an overflow of reflex tears. Unfortunately, these tears lack the oils needed to properly lubricate your eyes, so the watering continues.

Common symptoms include:

• Burning or stinging

• Blurry vision that comes and goes

• Gritty sensation

• Red eyes

• Eye fatigue

• Light sensitivity

Did you know? Many patients assume watery eyes mean they have too many tears. In reality, they're often producing tears that don't effectively protect the eye because of dry eye disease.

2. Allergies

Seasonal allergies commonly cause watery eyes, especially during spring and summer.

Other symptoms include:

• Itchy eyes

• Redness

• Puffy eyelids

• Sneezing

• Runny nose

If itching is your main symptom, allergies are often the cause.

3. Digital Eye Strain

Spending long hours looking at computers, tablets, or smartphones reduces how often we blink.

Less blinking can dry out the surface of your eyes, leading to irritation and excessive tearing.

Try following the 20-20-20 Rule:

Every 20 minutes, look at something 20 feet away for 20 seconds.

4. Blocked Tear Ducts

Normally, tears drain through tiny ducts near your eyelids.

If those ducts become blocked, tears have nowhere to go and overflow onto your cheeks.

This becomes more common with age.

5. Eye Infections

Conditions such as conjunctivitis (pink eye) can cause:

• Excessive tearing

• Redness

• Discharge

• Swelling

• Irritation

Prompt treatment helps prevent complications and reduces the spread of infection.

6. Irritation or Eye Injury

Even something as simple as:

• Dust

• Smoke

• An eyelash

• A scratched cornea

• Contact lens irritation

can trigger excessive tearing as your eye attempts to protect itself.

When Should You Book an Eye Exam?

Schedule an appointment if your watery eyes:

• Last more than a few days

• Keep coming back

• Affect one eye repeatedly

• Are accompanied by blurred vision

• Cause pain, redness, or light sensitivity

• Interfere with reading, driving, or everyday activities

Persistent tearing is usually a sign that something isn't functioning properly and should be evaluated.

When Is It an Emergency?

Seek immediate medical attention if watery eyes occur with:

• Sudden vision loss

• Severe eye pain

• A chemical splash

• Significant eye trauma

• Flashes of light

• A sudden increase in floaters

These symptoms may indicate a serious eye condition requiring urgent treatment.

How Are Watery Eyes Treated?

Treatment depends entirely on the underlying cause.

After a comprehensive eye exam, your optometrist may recommend:

• Dry eye treatment

• Artificial tears

• Warm compresses

• Prescription eye drops

• IPL or Radiofrequency (RF) treatment for dry eye

• Allergy management

• Updated glasses or contact lenses

• Referral for blocked tear ducts or other medical conditions when appropriate

Treating the underlying cause—not just the symptoms—is the best way to achieve lasting relief.

Expert Insight

At Oshawa Eye Care, we frequently see patients who assume watery eyes are caused by allergies. In many cases, the real culprit is dry eye disease.

Because several different conditions can cause excessive tearing, a comprehensive eye exam is the most reliable way to determine the cause and recommend the right treatment.

Find Lasting Relief

If your eyes are watering regularly, don't ignore the symptoms. Whether the cause is dry eye, allergies, irritation, or another eye condition, early treatment can improve your comfort and help protect your long-term eye health.

Our experienced team at Oshawa Eye Care provides comprehensive eye exams and personalized treatment plans to identify the cause of watery eyes and recommend the most effective solution.

Book your comprehensive eye exam today and let us help you see more comfortably.

Frequently Asked Questions

Why do my eyes water even when they feel dry?

Dry eye disease often causes an overflow of watery tears that don't properly lubricate the eye, leading to excessive tearing.

Why does only one eye keep watering?

This may be caused by a blocked tear duct, irritation, an eyelid problem, or a foreign object. An eye exam can determine the cause.

Can screen time make my eyes water?

Yes. Reduced blinking during screen use can dry out the eyes, triggering reflex tearing.

Why do my eyes water when I go outside?

Wind, cold air, bright sunlight, dry eye disease, and seasonal allergies can all trigger excessive tearing outdoors.

Are watery eyes a sign of allergies?

Yes, especially if they're accompanied by itching, redness, and sneezing. However, dry eye disease can produce very similar symptoms.

Should I be worried about watery eyes?

Occasional watering is common, but persistent tearing, pain, blurred vision, or redness should be assessed by an optometrist.