Scientists just discovered a new human body part!
And you thought we knew everything we could know about body parts. Thanks to new technology, scientists have discovered that our eyes' corneas don't have 5 layers, as previously believed, but rather 6.
The new layer, called Dua's Layer is only 15 microns thick. If that doesn't mean much to you, consider that this layer is smaller than beach sand and mist. The cornea itself is only 500 microns thick, but is incredibly tough and strong.
The new discovery will lead to entire ophthalmology textbooks being rewritten, as well as probably better surgical treatments for certain problems that are caused by the tearing of this previously unknown layer.