Persistent Pupillary Membranes (PPM)

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.

[1]  M. B. Glaze.  Congenital and hereditary ocular abnormalities in cats. , 2005, Clinical techniques in small animal practice.

[2]  G. Johnson,et al.  Familial cataracts and concurrent ocular anomalies in chow chows. , 1992, Journal of the American Veterinary Medical Association.

[3]  R. W. James.  Persistent pupillary membrane in basenji dogs , 1991, Veterinary Record.