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Tag: Eyes

Why do we blink? The story behind our body functions

April 18, 2024April 20, 2024Arsen Mayer

We blink our eyes without thinking about it but spend a remarkable fraction of our awake time while blinking. Most adults do it about 14 to 17 times per minute; that adds up to 840 to 1,020 blinks every hour, and if you sleep for eight hours every night, you probably blink about 13,440 to […]

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Woman wearing colored contact lenses nearly blinded

March 20, 2024March 22, 2024Arsen Mayer

An Israeli patient almost lost her vision because she used cosmetic, colored contact lenses to upgrade her costume for Purim by “changing” the color of her iris. These lenses are often presented as fashion accessories on social media, persuading many consumers, mostly young people, to purchase them. But ophthalmologists warn against using them, explaining that […]

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Lab-grown retinas explain why people see millions of colors

February 5, 2024February 5, 2024Arsen Mayer

Many animals have advantages over humans: Dogs and cats have a more acute ability to smell; cows can subsist on grass and hay; and giraffes can reach high into the trees for food. But mammals can’t see the millions of colors that people can.  With human retinas grown in a petri dish, researchers discovered how […]

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