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What Does It Mean to Have 20/20 Vision?
The term "20/20 vision" refers to how sharp your eyes are when you look at a standard eye chart (Snellen chart) from a distance of 20 feet (or 6 meters)—depending on where you live. In the United ...
Add Yahoo as a preferred source to see more of our stories on Google. One survey shows that more than 60% of people feel less confident driving at night compared to during the day. (Getty Images) ...
Add Yahoo as a preferred source to see more of our stories on Google. Sure, we all wish we could have 20/20 vision forever. But issues like too much screen time or dry eyes can cause blurry sight. The ...
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