<http://schema.org/description>
"A transparent cornea is essential for vision, which is why the eye has evolved to nourish the cornea without blood vessels. But for millions of people around the world, diseases of the eye or trauma spur the growth of blood vessels and can cause blindness."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2011-12-gene-humans-mice-cornea-transparency.html>