Health Concerns with Aussies
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Pra/Prcd: Progressive Retinal Atrophy (PRA): PRA is a group of diseases that cause the retina of the eye to degenerate very slowly over time.
As a result vision declines and eventually leads to blindness. “prcd” is “progressive rod-cone degeneration” is a type of PRA.

HC or HSF4: Hereditary Cataract: A cataract is an “opacity”, or loss of transparency of the lens of the eye. The opacity may be just a small area
of the lens, or it may cover the whole structure. A full cataract affecting both eyes will cause blindness.  However, small non-progressive
cataracts typically do not interfere with vision.

DM: Degenerative Myelopathy: is a progressive neurological disorder that affects the spinal cord. Dogs that have inherited two defective
copies will have breakdown of the cells responsible for sending and receiving signals from the brain. This causes neurological symptoms.

CEA/CH: Collie Eye Anomaly (CEA) Choroidal Hypoplasia (CH).  Is a recessively inherited eye disorder that causes abnormal development of
the Choroid.  The Choroid is a layer of tissue under the retina of the eye. Since the choroid layer does not develop normally from the start
CEA/CH can be diagnosed at a very young age.

MDR1: Multi-Drug Resistance Gene, (MDR) refers to the codes of a protein that protects the brain by transporting possibly harmful chemicals
away from the brain. If a mutation occurs in the MDR1 gene it can cause sensitivity to Ivermectin, Loperamide, and several other drugs. When
the protein is unable to remove certain drugs from the brain, this can lead to a buildup of toxins. If toxins build up, the dog can display
neurological symptoms, such as seizures, ataxia, this can also cause death.

OFA: ORTHOPEDIC FOUNDATION FOR ANIMALS: An OFA radiograph is a collection of Radiographs that are completed by a certified
Veterinarian. These Radiographs or X-Rays are of several different areas of the dog to review the possibility of Dysplasia. For further
information on this please see
http://www.offa.org/

Cerf: Canine Eye Registry Foundation (CERF): Is a screening exam by board certified veterinarian ophthalmologist. This is exam is completed
to look for defects in the eye.  For more information or to find a Board Certified Veterinarian Ophthalmologist near you please see the link
listed below.
http://member.acvo.org/search_results
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