The Truth About Common Vision Myths

By Hallie Levine Sklar
Updated February 26, 2021
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Does staring at a computer all day or reading in dim light really ruin your eyesight?
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True or false?

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We've all heard that computer monitors can damage your vision, or that staring at the sun for too long will make you go blind. But is that really the case?

Here, we separate fact from fiction and set the record straight on four of the most commonly held beliefs regarding eyesight.

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Sitting too close to the TV screen hurts your eyes

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False.

It's safe—though if you have to sit close to see, you may need a new Rx.

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Staring at a computer for too long is bad for you

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False.

It won't cause permanent damage, but to avoid dry eye, follow the "20-20-20" rule: Every 20 minutes, look at an object at least 20 feet away, for at least 20 seconds.

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Never look directly at the sun

True.

Even when there's no eclipse happening, staring at the sun can lead to solar retinopathy—damage to the retina from solar radiation.

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Reading in dim light is harmful

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False.

It won't ruin your vision, but you could get dry eye, blurred vision, or even neck or back strain.

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By Hallie Levine Sklar