An inherited condition that can lead to blindness in some dogs. Collie Eye Anomaly can cause changes and abnormalities in both the choroids and the sclera. These changes can be ‘choroidal hypoplasia’ which is an abnormal development of the choroids, coloboma which is a defect in the optic disc, staphyloma, which is a thinning of the sclera and finally retinal detachment. Collie Eye Anomaly usually occurs by the time the dog is 2 years old and is diagnosed by a veterinarian ophthalmologist. There is no treatment for the condition. It is important to remember that this condition is a genetic abnormality and your breeder should be notified if your puppy has the condition. It is also important to spay or neuter your dog to prevent the gene from carrying on into a new generation of puppies.