Eye Health
While a blind dog can still lead a "mostly" normal life, it most certainly will not be able to work or perform tasks to the same level as a dog will full vision. Belgian Malinois are not known for having major eye health disorders. Australian Cattle dogs can be affected by an eye disease known as PRA although what percentage of the breed is actually affected is unknown.
Eye CERFs
I do not do Canine Eye Registry Foundation or "CERF" testing as it is know on any of my dogs. This requires a board certified Veterinary Ophthalmologist to exam the eye every year for evidence of eye disease. The problem with this sort of testing is that it is inconclusive and can change from year to year. I once had a vet tech tell me that she bred her female sight hound to a stud that was eye CERF'd clear, only to find out a year later that the stud she used had gone blind at 3 years of age. I feel that a test that has to be repeated yearly because the test results can change does very little to help in making responsible breeding decisions.
PRA in Australian Cattle dogs
Progressive Retinal Atrophy is a degenerative eye disease that eventually leads to blindness. Australian Cattle dogs can be genetically tested for PRA-prcd and their results can be Clear "A" where they have two normal copies of the gene and will not go blind due to PRA. Carrier "B" where they have one normal copy of the gene and one affected gene and will not go blind due to PRA, or Affected "C" where they have two copies of the affected gene and will eventually go blind. The purpose of testing for PRA is not to remove individuals form the breeding pool but to make informed breeding decisions. You can breed A to A, A to B, and A to C with a low probability of producing affected puppies. B to B and C to C breedings are not ideal as their is a high probability of producing affected puppies.
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