Hello. Thanks for writing in. My name is***** and I would be happy to help you. I am not set up to do phone calls but would be happy to answer any questions you do have online. I am not sure how long she has been blind, but if it is recent, that can be the cause. This sounds more like a neurologic problem, though. You can see circling if there is an inner ear
infection, a middle ear tumor or polyp, head trauma, thiamine deficiency (unlikely if on a complete dog food
), metronidazole (antibiotic) toxicity or a brain
tumor. With her age, an inner ear infection and tumor would be the first concerns. Still, you may see some neurologic complications with liver or kidney dysfunction. The toxin build up can affect the brain. That may lead to the circling and running into the walls. I would have your vet check her out tomorrow morning and run some blood work on her. They can also check her for an ear infection. Unfortunately, a brain tumor is difficult to diagnose without a CT scan or an MRI, but there are some things they may find on exam that would highly suggest it. Please let me know if you have any other questions or concerns. Hope this helps. My goal is to make sure that you get all your question answered and all the information you need. If you are satisfied with my answer, PLEASE RATE IT. Rating it is the only way I get credit for helping you. If you feel like it is not helpful to you, or if there is more information you need, please respond back to me before rating. Realize that our conversation is not intended to diagnose or treat a condition. There has to be a valid veterinary-client-patient relationship established with an exam, according to law. You should always follow up with your vet.