Orbital Calcifications &
Imaging of
Optic Nerve Head Drusen

Outline

Ms. GB’s Fall

Ms. GB’s Head CT

What now?

Asymptomatic Orbital Calcifications

DDx of Orbital Calcifications

Relevant Orbital Anatomy 1

Relevant Orbital Anatomy 2

Relevant Orbital Anatomy 3

Relevant Orbital Anatomy 4

Orbital Anatomy: Quiz
What is misplaced and where is it?

Calcified Scleral Plaque

Calcified Cataract Latin = “waterfall”

Calcified Trochlear Apparatus

Phthisis Bulbi Greek = “wasting”

Slide 17

What did Ms. GB have?

Why is imaging of ONHD important?

Imaging of ONHD

ONHD – CT

Slide 22

ONHD – Ultrasonography / B-scan

Imaging of ONHD:   B-scan v CT v FA

Imaging of ONHD:   B-scan is best

Summary

Slide 27

Acknowledgements