What is the correct description of latent nystagmus?

Neuro Ophtha 1

Quiz
•
Biology
•
Professional Development
•
Hard
Gabriel Alejo
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Under moncular conditions, bilateral jerk nystagmus occurs with fast phase beating towards viewing eye
Under moncular conditions, bilateral jerk nystagmus occurs with fast phase beating towards occluded eye
Under moncular conditions, there is unilateral jerk nystagmus of viewing eye with fast phase beating towards viewing eye
Under moncular conditions, there is unilateral jerk nystagmus of viewing eye with fast phase beating towards occluded eye
Answer explanation
LN - nystagmus that develops early in life
A bilateral jerk nystagmus that generally manifests upon occlusion of 1 eye. Fast phase beats toward the viewing eye.
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What percentage of the population has physiologic anisocoria noticeable on penlight exam?
1%
5%
10%
20%
Answer explanation
Physiologic anisocoria - less than 1.0mm difference in pupillary diameter between both eyes; usually same in light and dark conditions
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Based on the Optic Neuritis Treatment Trial (ONTT), what percentage of eyes affected by demyelinating optic neuritis demonstrate optic disc edema?
35%
55%
75%
95%
Answer explanation
ONTT:
35% of demyelinating optic neuritis optic nerves were edematous
65% were normal appearing
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
How long after injury to retinal ganglion cells or their axons does it take for optic nerve atrophy to appear?
1-2 days
1-2 weeks
4-6 weeks
10-12 weeks
Answer explanation
This fact simply needs to be memorized :)
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the eponym for idiopathic sterile inflammation of the cavernous sinus?
Wallenberg syndrome
Heimann-Bielchowsky phenomenon
Miller-Fisher syndrome
Tolosa-Hunt syndrome
Answer explanation
Wallenberg - lateral medullary syndrome
Heimann-Bielchowsky - monocular vertical pendular nystagmus w/c occurs in poorly seeing eye
Miller-Fisher - an oculomotor predominant variant of Guillain Barre syndrome wherein EOMs are affected first
Tolosa-Hunt - sterile inflammation of cavernous sinus marked by ipsilateral periorbital pain w/ deficits of any or all nerves passing through cavernous sinus (CN 3,4,V1,V2,6 and all sympathetics)
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