Eyelids

Question 1

Frontalis muscle is innervated by what?

Answer 1

CN7 - Frontalis - is a secondary elevator of upper eyelid

Question 2

What are the 3 protractors of the eyelid?

Answer 2

Closes

1. Orbicularis oculi - primary closure
2. Procerus - secondary closure
3. Corrugator - secondary closure

Question 3

Which muscle causes levator synkinesis when the mandible moves to the opposite side?

Answer 3

External pteryoid

Question 4

Which muscle causes levator synkinesis with clenching of the teeth?

Answer 4

Internal pteryoid

Question 5

What causes upside-down ptosis of the lower lid?

Answer 5

Horner’s

Question 6

What is the most common presenting sign for MG?

Answer 6

ptosis

Question 7

NASCET trial recommend surgery for whom?

Answer 7

For pts with symptomatic extra cranial stenosis of 70% or greater whose medical condition does not preclude surgery.