Anybody ever heard of cretious material?

Question

A friend of mine had cataract surgery and a couple of weeks later (after much pain), the ophthalmologist found a piece of matter under the top eyelid--which had scratched the cornea. The ophthalmologist called it "cretious material"--don't know how close to the spelling I am, and said it was caused by "tears turning to stone". I've never heard of this before. Anybody got any ideas?

Answer 1

it is a concretion and its like a calcium deposit,  this probably had nothing to do with the cataract surgery

Answer 2

You friend had a "concretion".  

http://www.revoptom.com/HANDBOOK/March_2...