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Health, 13.05.2021 22:00 lolaloiuy7695

Optometrists recommend the 20-20-20 rule. Look away from the computer screen every 20 minutes or so and look at something around 20 feet away for about 20 seconds. Blink often to keep your eyes moist. Why?


Optometrists recommend the 20-20-20 rule. Look away from the computer screen every 20 minutes or so

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Optometrists recommend the 20-20-20 rule. Look away from the computer screen every 20 minutes or so...

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