Orbit

Question 1

Superior Contents of Superior orbital Fissure

Answer 1

L
F
T
SOV

Question 2

Middle Contents of Superior orbital Fissure

Answer 2

O
N
A
O

Question 3

Inferior Contents of Superior orbital Fissure

Answer 3

IOV

Question 4

Contents of Optic Canal

Answer 4

Optic Nerve
Ophthalmic Artery

Question 5

SOF made by which bones

Answer 5

Gap between GWS laterally and LWS medially

Question 6

Optic Canal made by which bones

Answer 6

Defect in LWS

Question 7

Inferior Orbital Fissure made from which bones?

Answer 7

GWS and Maxilla

Question 8

First sign to know the spread of the one side Cav Sinus thrombosis to the other side

Answer 8

LR palsy

Question 9

First cranial nerve involved in the CSThrombosis

Answer 9

CN 6

Question 10

Most common spread from where in CVthrombosis

Answer 10

Danger triangle of face

Question 11

CVThrombosis mortality without and with Rx

Answer 11

100%
20%

Question 12

Imaging modality of choice for CVThrombosis

Answer 12

CECT / MRI Venography

Question 13

Up to ___% have residual cranial nerve deficits (esp. III or VI palsy) in CVThrombosis

Answer 13

50%

Question 14

___% may have permanent vision loss in CVThombosis

Answer 14

15%

Question 15

Rx of CVTHROMBOSIS

Answer 15

Antibiotics
Anticoagulants
Steroids in severe cases
Surgery

Question 16

Infection spreads via ____& _____, leading to CVthrombosis

Answer 16

valveless facial and ophthalmic veins

Question 17

Cavernous sinus contains

Answer 17

cranial nerves III, IV, V1/V2, VI, and the internal carotid artery with Sympathetic nerves around it.

Question 18

Veins draining into Cavernous sinus from Orbit

Answer 18

Superior Ophthalmic Vein
Central Retinal Vein
Inferior Ophthalmic Vein

Question 19

Cavernous Sinus drains into

Answer 19

Superior Petrosal Vein > Transverse Sinus

Inferior Petrosal Vein > Internal Jugular Vein

Pterygoid Plexus

Question 20

Sinus connecting each Cavernous sinuses

Answer 20

:anterior and posterior intercavernous sinuses
:basilar plexus of veins.

Question 21

Chandler classification

Answer 21

Stage I: Preseptal Cellulitis:

Stage II: Orbital Cellulitis:

Stage III: Subperiosteal Abscess:

Stage IV: Orbital Abscess:

Stage V: Cavernous Sinus Thrombosis: