Have you had his thyroid checked? Abnormalities there can result in many weird symptoms. If you haven't, I would have that done straight away.
I imagine the vets have already checked for things like diabetes and cancer, right? Lyme tests can show false positives if antibodies haven't been created yet. Did the vets check for lyme again?
Eyes degrading and getting cloudy is kind of a normal thing for dogs as they age. At 8 years old, your dog is a senior. I hope vets are considering that the cloudy eyes has nothing to do with the lameness, lethargy, and general feeling of being unwell in your dog? I mean, it might, but it might also just be an unfortunate but likely coincidence.
Treatment seems to be similar with auto-immune diseases, but you might be able to help reduce symptoms by changing your dog's diet or trying acupuncture. Discuss these options with your vet and see what they say.
I imagine the vets have already checked for things like diabetes and cancer, right? Lyme tests can show false positives if antibodies haven't been created yet. Did the vets check for lyme again?
Eyes degrading and getting cloudy is kind of a normal thing for dogs as they age. At 8 years old, your dog is a senior. I hope vets are considering that the cloudy eyes has nothing to do with the lameness, lethargy, and general feeling of being unwell in your dog? I mean, it might, but it might also just be an unfortunate but likely coincidence.
Treatment seems to be similar with auto-immune diseases, but you might be able to help reduce symptoms by changing your dog's diet or trying acupuncture. Discuss these options with your vet and see what they say.