Microphthalmia, or an abnormally small eye, is the most
common eye defect seen in homozygous merles.
Entropion is the most
common eye defect found in Saint Bernards.
Not exact matches
Some of the most
common health conditions that are seen in golden retrievers include: cancer (particularly mast cell tumors), hip dysplasia, heart conditions, skin allergies, Von Willebrand's disease, congenital
eye defects and obesity.
Some of the
common health issues linked with the English Toy Spaniel breed include mitral valve disease, respiratory problems, luxating patella, ear infections, and
eye defects.
As already stated, the visible
eye defects common to Double Merle dogs are generally stable (what the pup is born with is what the adult dog retains).
Some of the most
common health problems known to plague the breed include
eye defects, deafness, chronic heart disorders, and kidney troubles.
Breeding animals should be proven free of these faults and
common genetic
defects (such as hip dysplasia, epilepsy,
eye and heart disorders) BEFORE being considered for breeding.
You'll also want to know that the parents have been prescreened to avoid genetic
defects common in a breed, typically
eye and hip disorders.
In my
eyes a true professional will make a buyer have a complete understanding of what they are dealing with and whether or not the
defect is
common for the age of the property and life expectancy of the item in question.