Page 111 - Rule Outs in Small Animal Medicine, Problem-oriented Assessment of Problems in Physical Examination and Clinical Pathology, 2nd Edition

Neurology

Rubrik e

VetBooks.ir

Blindness

Central Peripheral
blindness blindness
(normal direct (no/reduced
pupillary light pupillary light
reflex) reflex)

Lesion Lesion Lesion Lesion
in cerebrum in optic chiasm in optic nerve in eye

Bilateral Unilateral – Neoplasia – Optic neuritis – Progressive
central central – Meningo- – Neoplasia retinal
blindness blindness encephalitis – Meningo- degeneration
encephalitis – Hypertensive
retinopathy
– Hydrocephalus – Neoplasia – Retinal
– Meningoencephalitis – Meningoencephalitis detachment
– Trauma – Haemorrhage – Glaucoma
– Metabolic cause – Infarction – Sudden
(e.g. hepatic – Trauma acquired
encephalopathy, retinal
hypoglycaemia) degeneration
– Cerebral oedema – Other eye
– Postictal diseases
– Seizures

101