A new test called "Is my blue your blue?" reveals how different -- or similar -- your color perceptions are compared to everyone else. First there was “the dress,” then there was the sneakers, now ...

Most of us like to think we’ve got vision as sharp as an eagle’s. But honestly, how sure are we? This test is a simple way to check that. You’ll see 23 colored images with hidden numbers, letters, ...

Millions globally live with colour blindness, often unaware of their condition. An optometrist shares a quick, one-minute test using Ishihara plates to help identify colour vision deficiency, which ...

Good vision is a characteristic that is nice to have. Unfortunately, only 35% of adults have 20/20 vision without the use of glasses, contacts, or vision-correcting surgery. Though many of us do not ...

First there was “the dress,” then there was the sneakers, now there’s a debate over the color blue. If you’ve ever argued with a friend over whether something is blue or green, you’re not alone. A new ...