Head and neck doctors academy continued

Question 1

What types of injuries can occur to orbit/eye following trauma or surgery?

Answer 1

-Orbital floor/blowout fracture (teardrop sign: propulsion down of inf rectus + orbital fat)
-Orbital cellulitis: can lead to cavernous sinus thrombosis

Question 2

Innervation and action levator palpebrae superioris

Answer 2

3, elevates upper eyelid

Question 3

Superior rectus innervation and action

Answer 3

3, elevates, adducts and medially rotates globe

Question 4

Inferior rectus innervation and action

Answer 4

3, depresses, adducts and medially rotates globe

Question 5

Lateral rectus

Answer 5

6, abducts globe

Question 6

Medial rectus

Answer 6

3, adducts globe

Question 7

Superior oblique innervation, action

Answer 7

4, abducts, depresses and laterally rotates globe

Question 8

Inferior oblique;

Answer 8

3, abducts, elevates and laterally rotates globe

Question 9

What nerves are responsible for accommodation and light reflex

Answer 9

Optic (afferent)
Oculomotor (efferent)

Question 10

What are the causes of ptosis?

Answer 10

Oculomotor palsy
Horner’s
Myaesthenia