Persistent pupillary membranes
Persistent pupillary membranes are strands of tissue in the eye. They are remnants of blood vessels which supplied nutrients to the developing lens of the eye before birth. Normally these strands are gone by 4 or 5 weeks of age.
Depending upon the location and extent of these strands, they may interfere with vision. They may bridge from iris to iris across the pupil, iris to cornea (may cause corneal opacities), or iris to lens (may cause cataracts), or they may form sheets of tissue in the anterior chamber of the eye. In many dogs these tissue remnants cause no problems, but in others, vision may be severely impaired. Early Litter screening by a BVA eye panellist is recommended
How can we avoid this disorder?
Only by breeder integrity.
Although there is evidence of inherited mode, this is not always the case. However it is not recommended to breed from hounds diagnosed with PPM and early litter eye screening is advisable