Transcript for Can the Sweet Potato Help Prevent Blindness?
And rural West Africa good reason to give thing. Not turkeys -- cranberries but in new crop in the village's -- on thin orange sweet potato. He's too sweet potatoes -- the same this native ones when you cut it open. Is white inside. This new and that was introduced its is orange. Color makes all the difference. That's because the orange means it has beta carotene which your body turns into vitamin -- -- out of a -- -- babies can go blind even -- pregnant women -- Nightline's. Orange vs white had a you all figure this out I came across these -- sweet potatoes like what is this because for an American. -- -- -- -- -- -- -- This be a great way by just changing. By the make constantly speak to instantly -- a lot more vitamin people's diets. So scientists from Helen Keller international deep African win. An 80% of African farmers are -- A new hybrid sweet potato African but -- The results -- The electorate went. I mean killer by eliminating level question. And that she says it gives us the vitamins we need to fight off disease. Believe with three children have no complaints well thankfully terming crop credit garden. And she had after she can sell. It's much nutrition -- women now have a that it didn't come and spend more on health care spend more. On the kids' education really transforms people's lives a little bit of -- health revolution with nothing other than a vegetable. With a different colors really. Doctor Richard messrs. ABC news for -- -- West Africa.
This transcript has been automatically generated and may not be 100% accurate.