Neurological Conditions

Question 1

Causes of VI palsy

Answer 1

Raised ICP
Microvascular
Tumour

Question 2

VI palsy

Answer 2

Eye can’t abduct, looks up on abduction
Medially dispalced
Horizontal diplopia

Question 3

Causes of IV palsy

Answer 3

Congenital
Trauma (long course)
Macrovascular
Tumour

Question 4

IV palsy

Answer 4

Head tilt to avoid intorsion

Question 5

III palsy

Answer 5

Down and out
Ptosis
Pupil dilated

Question 6

Causes of III palsy

Answer 6

Aneurysm in COW - post communicating artery (pain)
Tumour
MS
Congenital

Question 7

Inter-nuclear ophthalmoplegia

Answer 7

Eyes work together via inter-nuclear pathways
Can’t adduct eye
Due to MS/vascular

Question 8

Strabysmus

Answer 8

Squint

Question 9

Route of optic nerves to brain

Answer 9

Optic nerve
Chiasm
Tracts
LGN of thalamus
Radiations
Occipital lobe

Question 10

Optic neuritis commonly seen in:

Answer 10

MS

Also SLE, sarcoid, infections, ethambutol

Question 11

Optic neuritis

Answer 11

Progressive unilateral visual loss
Pain behind eye, particularly on movement
Colour desaturation
Central scotoma (blind spot)
RAPD

Question 12

Occipital defect

Answer 12

Macular sparing