Why Do Your Eyes Water When You Yawn?

You’re sitting at work, watching TV, or getting ready for bed. You let out a big yawn—and suddenly your eyes start watering.

It happens so often that most people never stop to ask why.

Believe it or not, there is a scientific reason behind those unexpected tears.

What’s Happening When You Yawn?

When you yawn, several muscles in your face contract at the same time.

These movements create pressure around your eyes, eyelids, and tear glands.

As a result, tears that are normally spread across the surface of your eyes can temporarily overflow and become visible.

Your Tear System Is Always Working

Your eyes constantly produce tears—not just when you’re emotional.

These tears help:

• Keep your eyes moist
• Wash away debris
• Protect against irritation
• Maintain clear vision

Most of the time, these tears drain away through tiny openings near the inner corners of your eyelids.

Why Yawning Causes Extra Tears

When you yawn, your eyes often squeeze shut and facial muscles tighten.

This temporary pressure can affect how tears drain, causing some of them to spill over instead.

That’s why your eyes may appear watery for a few moments after a big yawn.

Can It Mean Something Is Wrong?

In most cases, no.

Watery eyes during a yawn are usually completely normal.

However, if your eyes are watering excessively throughout the day—even when you’re not yawning—it could be worth having them checked.

Other Causes of Watery Eyes

• Dry eye syndrome
• Seasonal allergies
• Eye irritation
• Blocked tear ducts
• Environmental factors like wind or smoke

When Should You Schedule an Eye Exam?

If watery eyes are accompanied by:

• Redness
• Pain
• Blurred vision
• Persistent irritation
• Discharge

it’s a good idea to have your eyes evaluated by an eye care professional.

How OptoDoc Can Help

At OptoDoc, we help patients understand what’s normal—and what isn’t—when it comes to eye health.

Whether you’re experiencing watery eyes, dryness, blurry vision, or simply need a routine checkup, our team is here to help.

Sometimes the questions we never think to ask have surprisingly interesting answers.

Book Your Eye Exam Today!