Hurtling through the dark, Danelle Umstead can't see anything as she skis down the slopes.
Instead, the blind alpine ski racer relies on communication with her husband and guide, via Bluetooth technology, to get her down safely, CNN reports.
Umstead was diagnosed with retinitis pigmentosa at 13 and her vision steadily deteriorated after that.
"It seemed like my life was just crumbling day by day," she told CNN. "I spent a long time feeling like there was not an easy way out or a way out at all."
But then her dad called her up and invited her to go skiing. "He said, 'We're gonna go skiing. ... I'm gonna be your eyes, and you and I are gonna go skiing.' We went down the mountain, and my life changed from that moment forward."
Umstead competes on the US Paralympic Team and won two bronze medals in 2010. The she was diagnosed with multiple sclerosis, and had to learn how to walk again. But her determination got her back on skis to compete again at the Paralympic Games in Sochi, Russia, where she brought home another bronze. Now she's aiming for the 2018 games in South Korea.
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