Abstract
ABSTRACTThe eyes of a group of Shelties and Collies were examined for Collie Eye Anomaly and Progressive Retinal Atrophy, and any other eye abnormality noted. The incidence of CEA in 120 Shetland Sheepdogs was over 48%. There were no cases of PRA. Other abnormalities noted were distichiasis, hyaloid artery remnants, corneal lipidosis, persistent pupillary membranes, cataract and various retinopathies.One group of an old type of Shetland Sheepdog, inbred for several generations, showed no signs of CEA. The significance of this finding is discussed.
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