Wild Discovery: an Extra Body Part
Turns out the eye's cornea has 6 layers, not 5
By Matt Cantor, Newser User
Posted Jun 13, 2013 8:42 AM CDT
Updated Jun 16, 2013 11:06 AM CDT
We have a "new" body part.   (Shutterstock)

(Newser) – You've got a body part you've never heard of—and neither had anyone else, until now. Scientists have discovered a sixth layer in the eye's cornea, which was previously believed to have just five layers. The new layer, which researcher Harminder Dua has dubbed Dua's layer, is only 15 microns thick, Popular Science reports. For comparison, Discovery News reports the layer is "smaller than beach sand and mist"; the entire cornea measures 550 microns thick. Still, Science Daily describes it as "incredibly tough and strong."

But the find could have big implications for health: A tear in the layer is likely the cause of a disorder called corneal hydrops, in which fluid builds up in the area. The discovery of the layer could lead to better surgery for related problems. "This is a major discovery that will mean that ophthalmology textbooks will literally need to be re-written," Dua says.

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Showing 3 of 19 comments
Jun 17, 2013 11:59 PM CDT
A friend of mine has a split cornea from an auto accident years ago and apparently it is permanent, makes his eyes very difficult to examine, and prevents him from getting refractive surgery to dispense with powerful lens prescriptions. It would be good if this puts them on the path to repairing such things.
Jun 17, 2013 1:04 AM CDT
NEWSER, you're a little slow this time. I read about this is a science journal more than six months ago, while waiting for an eye exam in my opthamologist's office.
Jun 16, 2013 12:42 PM CDT
Eye has sex layers if you lick it