Neurological FIP means that the FIP has penetrated the blood-brain barrier and there are neurological symptoms of the disease, such as weakness of the hind legs, inability to jump somewhere without hesitation, poor coordination, and seizures may also occur.
Similarly, the ocular form means that the FIP virus has penetrated the blood-ocular barrier and caused inflammation in the eye (uveitis - inflammation of the middle layer of the eye ball), it also manifests visually, see photo. Neurological and ocular forms are often associated.
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