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Artículos sobre Vision

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Whether in the wild or in the lab, worms have an interesting story to tell. Sinhyu/iStock via Getty Images

Why do scientists care about worms?

'Worm' is really a catchall term for a huge variety of animals with different characteristics that span the tree of life. They hold clues about our own origins as well as hints about human health.
A tiger’s vertical stripes help it blend in with trees and grasses in its homelands in Asia. Frédéric Soltan/Corbis via Getty Images

Why do tigers have stripes?

How do tigers – a top predator – successfully hunt their prey when they have bright orange fur? The secret's in their stripes!
With online learning, children are staring at computer screens for more hours each day. Christopher Furlong/Getty Images

Increasing screen time during the coronavirus pandemic could be harmful to kids’ eyesight

With online learning and social distancing, kids are spending more time staring at screens and less time outdoors. That can put them at higher risk of myopia and serious eye problems in the future.
Laser surgery is performed successfully in 95 per cent of cases but the operation can turn into a nightmare requiring complex treatments because it is a new, poorly documented field in medicine. Shutterstock

When laser surgery turns into a nightmare, the toll can be enormous

Laser surgery is touted as a good way to get rid of eyeglasses, but not everyone is suited for it. Plenty of research should be done before taking the plunge.
A woman walking with a white cane, which has become a symbol of independence for people who are blind. Akemaster/Shutterstock.com

Blind people have increased opportunities, but employers’ perceptions are still a barrier

People who are blind have made great strides in the workplace in the 55 years since the US first observed White Cane Day. Yet discrimination in employment still remains, two experts explain.
Vision is the most important source of information on which driving conduct is based. Poor vision of drivers has been found to be the cause of many accidents. Shutterstock

Poor vision: Do drivers always see what is happening on the road?

When you head out onto the road, there's always a chance that you might encounter a driver who has a vision problem, putting his or her driving at risk. Regulations need to change.

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