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What causes our eyes to blink?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Blinking is made possible by a muscle in the face called the obicularis oculi. It’s the only muscle that can close the eyelid and keep it shut. Some people lose the ability to use this important muscle, thus losing the ability to completely close their eyes. This can be very uncomfortable; the eye is unprotected and tears drain onto the face.
This content originally appeared on doctoroz.com

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.