Eye Checks and Breed Clubs: A Breeder's View
Eye certifications are a record of one examination on one day, not a lifetime guarantee. They tell you what a veterinary ophthalmologist saw at that appointment, and they tell you nothing about what the dog's eyes will do next year. That is the honest version, and it is the version I use when someone calls me about a litter.
I have bred Collies for 28 years, and I have handed a lot of paperwork across a lot of kitchen tables. The buyers who do well are the ones who read the paperwork instead of just collecting it. If you are buying a breed where eye disease runs in families, and you want to understand how other breeds handle the same problem, there is a French-language magazine on the Bull Terrier, Bull Terrier breed history, that covers standard, temperament and health testing from Hinks forward, and it is a useful comparison point for how one breed community organizes itself around its dogs.
What do the codes on an eye certificate actually mean?
An eye certificate is a form filled out by a Diplomate of the American College of Veterinary Ophthalmologists, usually through the OFA Companion Animal Eye Registry, or CAER. The exam is done after pupil dilation, with a slit lamp and an indirect ophthalmoscope. The vet writes a diagnosis for each structure examined: eyelids, conjunctiva, cornea, iris, lens, vitreous, retina, optic nerve.
Each line gets a code. A number means normal for that structure. A word or abbreviation means something was found. "PPM" is persistent pupillary membrane. "RD" is retinal dysplasia. "HC" is hereditary cataract. "CEA" is collie eye anomaly, which is the one I know best. "Distichiasis" means extra eyelashes rubbing the cornea. "KCS" means dry eye, which is often a management issue rather than a genetic one.
The important part is the bottom of the form. The vet gives an overall breed screening result: normal, or affected with a specific condition. That overall line is what a breed club reads. The individual codes matter to a veterinarian and to a geneticist. The overall line matters to a buyer.
A certificate is also dated. Most registries consider a normal result valid for twelve months, because eyes change. A two-year-old certificate on a five-year-old dog is not current information.
What an eye certification proves, and what it never proves
It proves that on that date, a qualified examiner looked and found no evidence of the conditions on the screening list. That is real information, and it is worth having.
It never proves the dog is clear of all eye disease. Some conditions develop later. Some are not visible on a routine exam. Some are recessive, which means two normal-eyed parents can produce an affected puppy.
It never proves the dog's relatives are clear. A certificate is about one dog. If you want to know what a line carries, you read the vertical pedigree: parents, grandparents, siblings, and their certificates, over several generations.
It never replaces a DNA test. For Collies, the CEA status comes from a DNA test, and the eye exam is a separate piece of evidence. A dog can be DNA normal and still have a certificate that notes something unrelated.
And it never replaces the breeder's judgment. I have seen buyers walk away from a sound litter because one grandparent had a note on an old form, and I have seen buyers ignore a pattern of affected siblings because the individual certificate looked clean. Read the pattern, not the single page.
Which breeds are expected to screen, and who sets the rules?
Breed clubs set the expectations, and the registries record the results. The Collie Club of America expects CEA DNA testing plus periodic eye exams. Many parent clubs publish a recommended screening schedule in their breed health statement, and some require a current exam before a dog is used at stud.
The Orthopedic Foundation for Animals maintains the public database where CAER results are stored, and it publishes breed-specific statistics. That database is where you check whether a breeder's claims match the record. You can search a dog by registered name or number and see the exam date, the examiner, and the result.
Some breeds have mandatory programs through their national kennel club. Others rely on voluntary participation. Voluntary does not mean meaningless. It means the buyer has to ask, and the breeder has to be willing to show the paperwork.
If a breed has no club screening program, that is not proof the breed has no eye problems. It usually means nobody has organized the data yet.
How do I read a certificate for a puppy I am buying?
Ask for the dam's and sire's current certificates, not the grandparents'. Ask for the DNA test results for any condition that has a test. Ask whether the litter was examined, and at what age, because some conditions cannot be assessed in a young puppy.
Then read the overall result line on each form. Normal is normal. Anything else, ask what it is and how it is managed. A breeder who cannot explain a code on their own dog's certificate is a breeder who has not read it.
Ask for the registered names and numbers, and look them up in the OFA database yourself. This takes ten minutes and it is the single most useful thing a buyer can do.
Finally, ask what the breeder does with the information. A breeder who screens and then breeds an affected dog to a normal one, with full disclosure, is making a calculated decision. A breeder who screens and hides the result is doing something else. The certificate is a tool. The breeding decision is the point.
What the certificate cannot tell you about living with the dog
Eyes are one system in one animal. A dog with a normal certificate can still be shy, sound-sensitive, or hard to housetrain. A dog with a noted condition can still be a wonderful companion for twelve years.
I tell buyers to weigh the eye information alongside temperament, structure, and the breeder's willingness to answer questions after the sale. A certificate is a snapshot of a medical fact. It is not a character reference and it is not a warranty.
For breeds with a strong cultural identity, the health conversation often sits inside a larger one about standard and purpose. The Bull Terrier community, for example, treats history, morphology and health testing as one subject rather than three, which is a sensible way to organize it. Whatever breed you choose, the same rule applies: know what the test covers, know what it does not, and keep asking until the answers are specific.
Where to check a result yourself
The OFA website is free and public. Search by registered name, registration number, or kennel name. The record shows the exam date, the examiner's name, and the result. If a breeder gives you a certificate that does not appear in the database, ask why.
Breed club health committees also publish summaries. Those summaries are where you learn whether a condition is common, rare, or rising in your breed. Read them before you fall in love with a puppy, not after.
And keep your own dog's certificates in a folder. When your dog is eight and the vet asks about history, you will be glad you did.