来自MSN

It's Really Rare To Have Perfect Color Vision, But If You Can Pass These Quizzes, You Just ...

Do your eyes work? You may think they do, but the ultimate vision test isn't the one at the optometrist's office*. It's these five BuzzFeed quizzes. Take them to see if you have perfect vision or ...
来自MSN

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 ...
Yahoo

If You Get 6/6 On This Color Block Quiz, You Can See A Wider Spectrum Of Color Than Most People

Think you’ve got perfect color vision and the eyes of an eagle? Prove it with Color Blocks, BuzzFeed’s newest and most addictive game! Get ready to challenge your perception as you tap on the one ...
Honolulu Star-Advertiser

Facts of the Matter: Color blindness is actually a rearranged color spectrum

The Ishihara Color Test is a widely used screening tool for color vision deficiency, especially red-green color blindness. It is striking how easily this difference can go unnoticed. A child learns ...