What is the definition or description of: pxe?

Pseudoexfoliation: Pseudoexfoliation is a condition where the eye makes an amyloid like protein that accumulates on the lens and other structures. It is nearly always in the elderly. It was originally thought to be in Scandinavian peoples, but recent studies have found it in populations around the world. It can cause glaucoma and zonular instability leading to cataract surgery complications and lens dislocation.