Opthamology I: Orbit, Eyelid, and Lacrimal Systems Flashcards Preview

Neuro Pt 3 > Opthamology I: Orbit, Eyelid, and Lacrimal Systems > Flashcards

Flashcards in Opthamology I: Orbit, Eyelid, and Lacrimal Systems Deck (11)
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1

What bones compose the orbital floor?

palatine, maxillary and zygomatic

2

What is the clinically weakest area in the orbit?

Orbital floor

3

Medial wall bones

SMEL: Sphenoid (lesser wing), maxillary, ethmoid, lacrimal

4

What is the thinnest area of the orbit?

Medial wall

5

Orbital roof bones

Frontal, lesser sphenoid wing

6

Lateral wall

Great-Z: Greater sphenoid wing and zygomatic

7

What is the thickest wall in the orbit?

Lateral

8

Oculocardiac reflex

Bradycardia, asystole, and arrhythmia when pushing or pressure on intraocular muscles or eye

9

Most commonly affected areas with orbital fractures

Medial wall and floor

Medial infraorbital canal is most common

10

When to repair an orbital fracture?

Repair within 2-4 weeks if enophthalmos, incarcerated muscle/orbital tissues, or if >50% of wall fractured

11

Nasolacrimal duct obstruction

Dacryocystistis

Infection of lacrimal sac

Treat with antibiotics

When infection is resolved, treat with surgical bypass surgery