Collie Eye Anomaly
	Collie Eye Anomaly ( CEA) is a blanket term used to describe a variety of eye disorders, including Iris Coloboma, detached retinas, small eye, and optic disk colobomas. These tend to appear together and are most common in collies. However they also exist in other "collie" breeds such as Australian Shepherds both standard and miniature. CEA has become less frequest in occurence over the past decade, probably due to the effort of breeders with affected lines to eliminate it.  CEA can be detected in a puppies first eye exam, but may be missed if the dog is 8 weeks old or more, due to the "go normal" phenomenon. It should be noted that "go normals" are not unaffected, but can no longer be diagnosed by a visual exam. The term "Go Normal", means that as a pup grows, pigment nvades the non pigment area of the eye, MASKING the presence of mild CEA. The pup will then appear normal when tested, but when bred, will reproduce as an affected dog. This leads many breeders to feel there is no rhyme or reason to testing and to become discouraged. Breeders trying to eliminate  "Go Normal" will have their puppies eyes examined by 6 weeks to determine as accurately as possible the genetic normals.