Neuro-Ophthalmology: Fourth Nerve

Question 0

right gaze

Answer 0

if the left eye is affected by fourth nerve palsy, what will increase hypertropia?

Question 1

hypertropic, extorted

Answer 1

describe the position of the eye affected by fourth nerve palsy in primary gaze

Question 2

down gaze

Answer 2

if the left eye is affected by fourth nerve palsy, what will increase excyclotorsion?

Question 3

tilted forward and contralateral, turned contralateral

Answer 3

head position in fourth nerve palsy (hint: the head does what the eye cannot) tilted ______, turned _______

Question 4

v-pattern esotropia

Answer 4

pattern in bilateral fourth nerve palsy

Question 5

left superior oblique, left inferior rectus, right inferior oblique, right superior rectus

Answer 5

muscle palsies that could cause a left hypertropia

Question 6

left superior oblique, right superior rectus

Answer 6

on opposite (right) gaze, a left hypertropia worsens: which muscle palsies could be implicated

Question 7

left inferior rectus, right inferior oblique

Answer 7

on left gaze, a left hypertropia worsens: which muscle palsies could be implicated

Question 8

opposite

Answer 8

In the Bielschowsky head tilt test, tilting the head in which direction improves the hypertropia of a fourth nerve palsy (opposite or same)

Question 9

double Maddox rod test

Answer 9

procedure used to measure cyclodeviation in fourth nerve palsy

Question 10

10

Answer 10

cyclodeviation in unilateral fourth nerve palsy should be less than this many degrees

Question 11

congenital, trauma, vascular

Answer 11

three most common causes of fourth nerve palsy

Question 12

tumor, aneurysm

Answer 12

because the nerve is relatively untethered, these two etiologies are extremely rare causes of fourth nerve palsy

Question 13

4

Answer 13

which of these cranial nerve palsies does not require routine neuroimaging: 3, 4, 6