Articles on Vision

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Applying eye black is an important part of prepping for a game for some players. Maddie Malhotra/Boston Red Sox via Getty Images

Why do baseball players put a black mark under their eyes?

As one piece of more than a century of baseball traditions, eye black is part science experiment, part routine and part uniform.
An AI and a human might classify this mammal with gray, wrinkled skin as very different animals. Richard Bailey/Corbis via Getty Images

AI doesn’t ‘see’ the way that you do, and that could be a problem when it categorizes objects and scenes

People and computers perceive the world differently, which can lead AI to make mistakes no human would. Researchers are working on how to bring human and AI vision into alignment.
The overall cost of direct care and indirect costs of myopia, including loss of productivity, was estimated to be US$244 billion in 2015. (Shutterstock)

Myopia is a disease, not a refractive error — here’s what that means

In December, the U.S.-based National Academy of Sciences published a report classifying myopia, for the first time, as a disease and no longer as a refractive error.

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