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  1. Dictionary
    Red-eye
    /ˈredˌī/

    noun

    • 1. the undesirable effect in flash photography of people appearing to have red eyes, caused by a reflection from the retina when the flashgun is too near the camera lens: "a pre-flash emission to minimize red-eye"
    • 2. an overnight or late-night flight on a commercial airline: informal North American "she caught the red-eye back to New York"
    More Definitions, Word Origin & Scrabble

  2. www.verywellhealth.com › red-eye-5223773Red Eyes: Symptoms, Causes, and Treatments - Verywell Health

    Apr 12, 2022 · Red eyes can be an extremely common symptom of various conditions ranging from dry eye to allergies and infection. By looking at other symptoms, you may get a clearer picture of what may be causing your eyes to redden.

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  4. www.mayoclinic.org › symptoms › red-eyeRed eye Causes - Mayo Clinic

    Mar 10, 2023 · This eye condition often looks much worse than it feels. Find out possible causes of inflamed, irritated eyes and when to call the doctor.

  5. my.clevelandclinic.org › health › symptomsRed Eye: Causes, Treatment & Prevention - Cleveland Clinic

    Jan 23, 2023 · The redness happens when tiny blood vessels under your eye’s surface get larger or become inflamed. Usually, it’s a reaction to something irritating your eye. Redness can affect one or both eyes. It can develop over time or appear suddenly, such as with allergies or an eye injury.

  6. www.webmd.com › eye-health › why-eyes-redRed and Bloodshot Eyes: Common Causes, Treatment - WebMD

    What Are Red Eyes? Red eyes, also known as "bloodshot eyes," happen when the tiny blood vessels on the surface of the whites of your eyes expand, turning the whites of one...

  7. www.visioncenter.org › conditions › red-eyesWhy Do Your Eyes Look Red? 10 Causes and Treatment

    • Dry Eye Syndrome. Dry eye syndrome is when the eyes are unable to produce adequate fluids (tears) to lubricate them. Other symptoms of eye dryness include
    • Eye Injury. Trauma to the eye can cause redness due to bleeding or irritation. Something as simple as accidentally scratching your eye with a sharp fingernail can cause an eye injury.
    • Eye Allergy. Allergies can cause symptoms like red and swollen eyes. Mold, pollen, and pet dander are common airborne allergens that can cause eye allergies.
    • Pink Eye (Conjunctivitis) Pink eye occurs when the clear membrane covering the white of your eye and the insides of your eyelids becomes red and inflamed.

  8. www.healthline.com › health › eye-redness20 Causes, Symptoms, and Complications of Red Eyes - Healthline

    Feb 15, 2024 · Red eyes occur when the vessels in your eye become swollen or irritated. Discover when to see a doctor, treatment, and more.

  9. www.allaboutvision.com › conditions › red-eyesRed Eyes: Causes and Treatment for Bloodshot Eyes

    Dec 11, 2018 · Red eyes occur when the blood vessels on the surface of the eye expand. Many people think of eye redness as a symptom, but it is actually a sign of a condition or other concern. An easy way to remember is that a sign is what a doctor sees, and a symptom is what the patient tells the doctor.

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