Page 110 - Rule Outs in Small Animal Medicine, Problem-oriented Assessment of Problems in Physical Examination and Clinical Pathology, 2nd Edition

Neurology Neurology
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Blindness
Nystagmus

Central Peripheral
blindness blindness
(normal direct (no/reduced
Alternating fast and pupillary light pupillary light
Oscillating
slow phases reflex) reflex)

Lesion Lesion Lesion Lesion
– Congenital in in cerebrum in optic chiasm in optic nerve in eye
Siamese and Vertical Horizontal or rotating
Burmese cats
Bilateral Unilateral – Neoplasia – Optic neuritis – Progressive
central central – Meningo- – Neoplasia retinal
blindness blindness encephalitis – Meningo- degeneration
encephalitis – Hypertensive
Central Peripheral Central retinopathy
vestibular vestibular vestibular – Hydrocephalus – Neoplasia – Retinal
disease disease disease – Meningoencephalitis – Meningoencephalitis detachment
– Trauma – Haemorrhage – Glaucoma
– Metabolic cause – Infarction – Sudden
(e.g. hepatic – Trauma acquired
encephalopathy, retinal
degeneration
â Vestibular disease â Vestibular disease â Vestibular disease hypoglycaemia) – Other eye
p. 98 p. 98 p. 98 – Cerebral oedema diseases
– Postictal
– Seizures

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