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What should you know about caffeine if you have dry eyes?

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When you have dry eye, your body doesn’t make enough tears, or the tears may not have the right consistency to keep your eyes moist. Limited research suggests that caffeine may help boost the amount of tears in your eyes.

Experts say that up to 400mg of caffeine a day, the amount in about 4 cups of coffee, seems to be safe for most people. But your best guide is how caffeine makes you feel.

Evidence doesn’t back up the common thought that caffeine could dehydrate you and somehow worsen your dry eye.

From: Caffeine and Dry Eye WebMD Medical Reference

SOURCES:

Michigan Medicine Kellogg Eye Center: “Dry Eye Syndrome.”

Ophthalmology : “Caffeine Increases Tear Volume Depending on Polymorphisms within the Adenosine A2a Receptor Gene and Cytochrome P450 1A.”

American Optometric Association: “Dry Eye.”

USDA: “National Nutrient Database for Standard Reference Release 28.”

Optometry and Vision Science : “The Effect of Caffeine on Tear Secretion.”

Harvard Health Letter: “Dry eyes? Try this!”

Brenda Pagan-Duran, MD, clinical spokesperson, American Academy of Ophthalmology.

UpToDate: “Benefits and risks of caffeine and caffeinated beverages.”

 

Reviewed by Brian S. Boxer Wachler on May 30, 2017

SOURCES:

Michigan Medicine Kellogg Eye Center: “Dry Eye Syndrome.”

Ophthalmology : “Caffeine Increases Tear Volume Depending on Polymorphisms within the Adenosine A2a Receptor Gene and Cytochrome P450 1A.”

American Optometric Association: “Dry Eye.”

USDA: “National Nutrient Database for Standard Reference Release 28.”

Optometry and Vision Science : “The Effect of Caffeine on Tear Secretion.”

Harvard Health Letter: “Dry eyes? Try this!”

Brenda Pagan-Duran, MD, clinical spokesperson, American Academy of Ophthalmology.

UpToDate: “Benefits and risks of caffeine and caffeinated beverages.”

 

Reviewed by Brian S. Boxer Wachler on May 30, 2017

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How can caffeine help in treating dry eyes?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.

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