Puppies with minimal choroidal hypoplasia may look normal at subsequent examinations because the area fills in with pigment. Most dogs with this eye grade function normally with no obvious vision deficits. It is the least harmful and least severe form of CEA. This is the most common abnormality found in Collie eyes. The choroid is a vascular bed beneath the retina. It is often difficult to judge choroidal hypoplasia in a Blue Merle’s eyes as the retinal pigment is diluted along with his coat color.Ĭhoroidal Hypoplasia, Chorioretinal Change: These refer to abnormalities in the development or pigmentation of the choroid. These correspond somewhat to a dog’s coat color. There are variations even in “Normal” eyes. The only way to determine if a Collie is genetically normal is a DNA test. Normal: A “Normal” eye rating is, of course, ideal. If the puppy’s eyes are not normal, the actual abnormality is noted. The eyes must be dilated prior to the examination, so the interior of the eye can be examined with an ophthalmoscope. Collie Eye Anomaly (CEA) can be easily checked when the puppies are 6-8 weeks old, by a Board Certified Ophthalmologist. This so-called syndrome (meaning a group of conditions which appear in conjunction with each other) is present prior to birth. It was later found to exist in most Collies and in most Collie families. Researchers first noted this problem over fifty years ago. This is the most common of the Collie eye diseases, but it should be noted that Collies share this disease with several other breeds. There are two which can seriously affect a Collies eyes and should be of concern to all breeders. Like people, Dogs are subject to a large number of inherited eye diseases. Request Test Codes For Optimal Selection panelĪN EXPLANATION OF EYE DISEASE by Gayle Kaye, edited by Nancy M Bromberg, VMD, MS, DACVO.
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