The mode of inheritance for PPM is not known, so the best course of action is not to breed dogs in which a PPM fails to resolve. If an unaffected animal produces it repeatedly, particularly with multiple mates, it should no longer be bred. Distachiasis Dogs with this defect have one or more eyelashes that grow toward the cornea, rather than away from it. The inward-growing hair can abrade the cornea. This is painful and, if not treated, can damage vision.
Surgical correction is available but can be expensive.
The mode of inheritance is unknown. Affected animals should not be bred. Unaffected individuals who produce it repeatedly, especially with multiple mates, should be pulled from breeding. Progressive Retinal Atrophy PRA has been reported in Aussies, but only rarely. It is a recessive, though there are several genetically distinct forms.