Persistent Pupillary Membranes (PPM)

Abstract

What Breeds Are Affected By Persistent Pupillary Membranes? PPM are known or strongly suspected to be inherited in the Basenji, Pembroke and Cardigan Welsh Corgi, Mastiff, and Chow Chow. This problem is particularly significant in the Basenji where the strands often bridge to the cornea, causing opacities which may impair sight. In the basenji the condition has been seen with optic nerve coloboma a cavity in the optic nerve which, if large, causes blindness.