It is very unlikely that the dog will develop Collie Eye Anomaly (CEA) / Choroidal Hypoplasia (CH) Option 2 Optigen* but since it carries the mutant gene, it can pass it on to its offspring with the probability of 50%.Ĭarriers should only be bred to clear dogs.Īvoid breeding carrier to carrier because 25% of their offspring is expected to be affected (see table above). The dog carries one copy of the mutant gene and one copy of the normal gene. The dog will never pass the mutation to its offspring, and therefore it can be bred to any other dog. It is very unlikely that the dog will develop Collie Eye Anomaly (CEA) / Choroidal Hypoplasia (CH) Option 2 Optigen*. The dog is noncarrier of the mutant gene. The disease can affect one or both eyes and can lead to vision loss although this disease rarely lead to complete blindness.ĬEA follows an autosomal recessive mode of inheritance.
Colobomas may lead to secondary complications such as partial or complete retinal detachments and/or growth of new but abnormal blood vessels with bleeding inside the eye. In the Severe form of the disease, the dog can suffer serious loss of vision, Colobomas can be seen around and at the optic nerve head as outpouchings in the eye tissue layers. CEA - Collie Eye Anomaly/Choroidal HypoplasiaĬollie Eye Anomaly is an inherited disease with recessive mode of inheritacne which results in abnormal development of the eye's choroid.The disease can be mild or servere, in the mild form of the disease, there is a thinning in the choroid layer of the eye but the dog's vision remains normal, however, dogs with the mild form of the disease can produce severly afected offspring.
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