Eye

Although small in size, the eye is an extremely complex organ that captures light and transforms it into impulses that the brain can interpret as images. Discover the different muscles, parts and conditions of the eye.

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Why do we have eyebrows?

Eyebrows add expression to your face, and are often waxed and plucked in the name of beauty. But why do we have them in the first place, and what would happen if they went away?


How Glasses Correct Colorblindness

Colorblindness affects around 300 million people worldwide. What is it and how can glasses help?

Could Your Smartphone Cause Temporary Blindness?

Maybe if you look at it with only one eye -- in the dark.

Half the World Will Be Nearsighted by 2050

And it's not because of all that screen time.

Is it possible to change your eye color?

Think your peepers are passé? Some cutting-edge cosmetic procedures can take your brown eyes to bright blue — with a few inherent risks.

Is it possible to cry blood?

Poetry is full of references to salty and bitter tears, but there's not much about bloody tears. Besides movie villains who weep blood, is this phenomenon real?

What are eye boogers?

As you're wiping away the crust from your eyes in the morning, do you ever ponder why it forms in the first place?

Is sitting too close to the TV really bad for your eyes?

Are you getting too up close and personal with your TV? Your eyes might think so.

Are there really arachnids living in my eyelashes?

If someone told you that oodles of arachnids are jumping (and mating) all over your eyelashes, you might be inclined to laugh it off. That sounds more like a scene from a horror movie than a scientific reality, right? Right?

What are eye boogers made of?

You probably don't give much thought to eye boogers, except maybe when you wipe them away. But you're about to learn a lot more about them (and while you're reading, you'll probably check your eyes for crud a few times).

10 Crazy Things Contacts Can Do

Contact lenses have been correcting vision for more than a century, but lenses today can make you look like a cat, monitor your blood sugar and maybe even make you a better athlete.