Essential iris atrophy. Report of a case.

The clinicopathologic findings in an eye from a 40-year-old man with essential iris atrophy are reported. Noteworthy is the proliferation of corneal endothelium and a laying down of a new Descemet (cuticular) membrane over the trabecular meshwork and in areas of anterior peripheral synechiae formation over the pseudoangle. The histologic characteristics favor a vascular cause for the condition, but the evidence is circumstantial.