Specializing in Canine and Feline Neurology and Neurosurgery for over 30 years

     Specializing in Canine and Feline Neurology and Neurosurgery for over 30 years

Vision

In order to "see", the following structures must function properly:

  1. eye & retina
  2. optic nerve
  3. brain

Patient's with a problem in the eye, retina, or nerves will have an abnormal pupillary light response (PLR) while patients with a problem in the brain (e.g. cortical blindness) will have a normal PLR.

 

COMMON SIGNS:

  • blindness
  • walking into objects

COMMON CAUSES:

      • Inflammatory
        • encephalitis
      • Neoplastic
        • brain tumor
        • retrobulbar mass
      • Traumatic
        • head injury
      • Metabolic
        • anoxia
        • storage diseases
        • hepatoencephalopathy
      • Vascular