Nerve palsy in eye

Question 1

CN III eyes look…?

Answer 1

Down and out

Question 2

CN III symptoms (4)

Answer 2

Double vision
Ptosis
Proptosis
Fixed pupil DILATATION

Question 3

CN III cause (6)

Answer 3

Posterior communicating artery aneurysm
MS
DM
Hypertension
Vasculitis
Herniation of brain

Question 4

CN IV eyes look…?

Answer 4

Upwards and inwards

Question 5

CN IV symptoms (2)

Answer 5

Double vision worse in VERTICAL plane

Tilted head to compensate

Question 6

CN IV cause (2)

Answer 6

Ocular trauma

DM

Question 7

CN VI eyes look…?

Answer 7

Inwards + cannot abduct

Question 8

CN VI symptom

Answer 8

Double vision in HORIZONTAL plane

Question 9

CN VI cause (4)

Answer 9

Diabetic neuropathy
Stroke
Infection
Trauma

Question 10

Horners syndrome symptoms (4)

Answer 10

Miosis (constriction)
Ptosis
Enophthalmos
Anhidrosis

Question 11

Horners syndrome site of lesion based on anhydrosis

Answer 11

Head, arm, trunk → central → stroke, syringomyelia
Just face → preganglionic → pancoast’s, cervical rib
Absent → post ganglionic → carotid artery

Question 12

Horners syndrome cause (4)

Answer 12

Trauma
Compression
Infection
Ischaemia