Why do my cat walk in circles, close to the wall, and stares at it.
Perhaps it's bored.
Could be hypoglycemia:
http://www.felinediabetes.com/hypogly.htm
Hopefully, it is. otherwise, your cat may have a brain tumor.
My cat is doing the same thing; she has appeared to have gone blind as well. We are taking her to the vet tomorrow.
Best wishes!
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