12/12/2022 0 Comments Collie eye anomaly![]() For some dogs it can be a mild disease, with thinning in the choroid layer of the eye, and the dog's vision remains normal. ![]() CEA symptoms can vary from dog to dog, it affects the retina, choroid, and sclera. In its more severe forms, which thankfully represents less than 5% of the total Rough Collie population, it can manifest itself as Colobomas of varying sizes and/or partially or wholly detached retina. Usually bilateral, affecting both eyes, in its milder forms it is no more than a slight lack of pigment to, or thinning of the optic disc which does not appear In most cases the disease in inherited in a very mild form, so mild in fact that it cannot be detected by clinical examination, and in this mild form it is not believed to affect vision at all. Dogs which carry the genetic mutation, known as 'Carriers' are normal but will pass the mutation on to an average of 50% of their offspring, therefore puppies which inherit two copies of the genetic mutation will be known as 'Affected'. It is an inherited disease in dogs and is controlled by genes which are expressed in offspring only when inherited from both parents. This is not the case, and please refer to an eye specialist if you are in any doubt - see HEREĬEA (also known as Choroidal Hypoplasia) is an inherited eye disease common to Collie breeds including the Rough and Smooth Collie. There seems to be some confusion around CEA, and some puppy buyers think that if the puppy has been DNA tested and the result is that the puppy is CEA affected, the puppy will go blind. ![]()
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