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Eye Strain? Diane J DJ Lost The average adult blinks between 12 and 20 times per minute. Based on a 16 hour waking day and a life span of 72 years, that would work out to be about 400 million blinks in a lifetime. The function of blinking, of course, is to lubricate the eye.

However, we are wired to blink less when looking at a compelling target. This is part of the reason that people who use computers for hours on end tend to experience eyestrain - they usually blink as little as 5 times per minute.

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