June 30, 2019/Eye Care

Why Do My Eyes Burn and Water Suddenly for No Apparent Reason?

Allergies aren't always the cause

Eye on fire and watery Illustration

We’ve all experienced the feeling of irritated eyes, going from a burning dryness to a sudden overflow of tears. Allergies can’t always take the blame for this, especially when your eyes are irritated out of season. Optometrist Weston Tuten, OD, explains why this sensation happens, and how to find relief.

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What causes your eyes to burn

Eyes typically burn when they dry out. The tear film that covers the surface of the eye is comprised of three layers. The bottom, a mucous layer, helps spread tears evenly over the surface of the eye. A thick, watery layer in the middle lies beneath a thin, oily outer layer.

“The outer layer provides a barrier to evaporation of the water layer,” Dr. Tuten explains. “The oils come from the sweat glands in your eyelids that are activated by the mechanical pressure of blinking, which is why if your vision is blurry, sometimes blinking helps make it clearer. Over time, these oil glands can become clogged, and each blink produces less oil to coat the tears and make sure they don’t evaporate.”

With the evaporation of water comes the stinging, burning sensation in the eyes.

“This is a signal for your brain to send more tears, but it can only send more watery tears,” he says. “Your excessive watery tears will spill over the lid margin and run down your face.”

Finding relief

A natural way to increase the amount of oil tears is placing warm compresses or dry eye masks over your eyes for around five minutes, melting the solidified oils in your eyelids.

“This shuts down the reflex loop of tearing,” Dr. Tuten says. “Using artificial tears with an oil layer substitute in them is another method. These provide an extra oil barrier to your tears.”

Are outside factors aiding to the problem?

Whether you wear contact lenses, glasses or no vision correction at all, dry and teary eyes is something that can affect everyone.

“Typically contact lens wear time is anywhere from 14 to 16 hours,” Dr. Tuten explains. “Different brands have different levels of oxygen they let through the cornea, so some you can wear a little longer than others. Don’t think that wearing contacts is always the cause of this sensation.”

When allergy season hits, over the counter medications and topical eye drops can help with additional symptoms of itchy and watery eyes.

When to see a doctor

If it’s been a few weeks and compresses and using artificial tears isn’t helping, it’s time to see a physician.

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“A blocked tear duct could be the issue,” Dr. Tuten says. “The tear ducts run from the corner of your eye by your nose, through your nose, and out through your throat. If they get blocked, it’s just like putting a plug in a drain. The tear level will rise and eventually over flow. A visit to see a specialist to have your lacrimal drainage system probed is the answer to getting relief.”

Another possibility for this persistent irritation is an ocular surface disease stemmed from another underlying condition.

“These range anywhere from systemic inflammatory problems to rheumatologic issues,” he explains. “These require stronger, prescription strength eye drops to help combat the dryness.”

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