PHPV – PERSITENT
HYPERPLASTIC PRIMARY VITREOUS
The mode of inheritance of PHPV is not so clear, but it is known that
it is a congenital condition (present at birth) and that it is not
progressive. This means that if a puppy is born with PHPV it can be
detected by ophthalmic screening from 6 weeks of age and if it is
affected, whatever the condition of the problem at that stage it will
not change throughout the dogs life.
Either of the above conditions can be operated on, but it is a serious
operation and can be traumatic and very expensive. It is not always
covered by insurance due to the hereditary nature.
Even though the genetic test is now available for Hereditary Cataracts
it is still important to screen for PHPV.
PPSC – POSTERIOR
POLAR SUBCAPSULAR CATARACT
This type of cataracts is found in other breeds, particularly the
Labrador and Golden Retriever.
It usually remains as a small, punctuate cataract and doesn’t usually
lead to sight problems in these two breeds. It has been placed on
schedule 3 of the BVA/KC/ISDS Eye Scheme because a number of Staffords
that have been through the Scheme have been found to have this type of
cataract. This type of cataract cannot be detected through litter
screening. The mode of inheritance is unknown and has a variable age
of onset. BREEDING STOCK SHOULD BE TESTED ANNUALLY TO DETERMINE THAT
THE DOG IS CERTIFIED CLEAR AT THE TIME OF MATING.