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Neuro Ophtha 2

Total questions: 5

Worksheet time: 4mins

Name
Class
Date
1.

What percentage of "microvascular" or "vasculopathic" 3rd nerve palsies demonstrate some degree of pupil involvement?

a)

<1%

b)

20%

c)

50%

d)

90%

2.

What is the most common structural etiology causing downbeat nystagmus?

a)

Posterior fossa meningioma

b)

Chiari type I malformation

c)

Spinal cord/brainstem syrinx

d)

Cerebellar hemangioma

3.

What are the average diameters of optic nerve head and intraorbital optic nerve respectively?

a)

1mm; 2mm

b)

1.5mm; 3mm

c)

3mm; 6mm

d)

1cm; 2cm

4.

A patient has right eye pharmacologically dilated, left eye undilated. Assume ha has a longstanding right RAPD from prior exams. To properly assess for RAPD in this patient, you must hold a light indirectly on the ___ eye while a direct light is swung back and forth between the eyes. In this case, the ___ pupil will dilate when direct light is swung from the ___ eye to the ___ eye.

a)

left, left, right, left

b)

left, left, left, right

c)

right, left, left, right

d)

Cannot assess RAPD in this scenario

5.

What is the primary MoA of apraclonidine?

a)

Beta adrenergic receptor agonist (B1 > B2)

b)

Alpha adrenergic receptor agonist (A2 > A1)

c)

Alpha adrenergic receptor agonist (A1 > A2)

d)

Beta adrenergic receptor agonist (B2 > B1)