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Use the 20-20-20 Rule
We blink up to two-thirds less often per minute when looking at a screen, which can dry out our eyes, causing irritation. To help maintain a healthy level of moisture and reduce eyestrain, get in the habit of looking at something at least 20 feet away for at least 20 seconds every 20 minutes.
Mark Rosenfield, PhD, professor of clinical education at the State University of New York College of Optometry
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As a reminder, always consult your doctor for medical advice and treatment before starting any program.

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