Eyelid: Parts of the Eyelid and How They Work - All About Vision
https://www.allaboutvision.com/eye-care/eye-anatomy/eyelid/
WEBFeb 2, 2021 · Are you having trouble with your eyelids? Blinking your eyes is as natural as breathing, so it’s easy to overlook the importance of the eyelids. Simply put, your eyelids need to stay healthy to protect your vision. If you’re having issues with your eyelids, like pain, itchiness or excess mucus, it’s time to have an eye doctor check it out.
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