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What caused red eyes?

Updated: 9/20/2023
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12y ago

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Depends... are they always red? usually red? sometimes red? Red eyes can be caused by Allergies. In this case, they will be red all the time for a period of time, such as 3 weeks every April, they're red (because a flower that you're allergic to bloomed). If they are red when you read, it may be from Irlen Syndrome. Read about this at www.irlen.com.

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Audra Weissnat

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1y ago
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14y ago

Red eye is caused by a camera's flash reflecting off the back of your subjects eye ball's in low ambient light situations, hitting the fundus then going back into the camera. The reason for the red color is because of the large amount of blood in the choroid.

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12y ago

In pictures, it's when light reflects off the eye and into the camera lens trying to capture the image.

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