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Eye exam? There's an app for that

The World Health Organization says there are about 285 million visually-impaired people worldwide and 90 percent live in poor countries. Doctors are now using a new app that turns ... More The World Health Organization says there are about 285 million visually-impaired people worldwide and 90 percent live in poor countries. Doctors are now using a new app that turns a smartphone into a portable eye clinic, which could help prevent hundreds of thousands of people from going blind. CBS News' Alphonso Van Marsh reports. Less

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