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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

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โˆ™ 2007-05-21 21:16:09
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Q: What causes extremely red eyes?
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