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Related Experiment Video

Updated: Jun 5, 2026

Three-Dimensional Reconstruction of Orbital Fractures

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Published on: May 16, 2025

Trochlear calcification mimicking an orbital foreign body.

Erin M Shriver¹, Craig A McKeown, Thomas E Johnson

¹Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA. eshriver@med.miami.edu

Ophthalmic Plastic and Reconstructive Surgery

|January 19, 2011

Summary

A patient experienced double vision after orbital trauma. Imaging suggested a metallic foreign body, but surgery found none, revealing pre-existing calcification as the cause.

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Area of Science:

Ophthalmology
Neuroradiology
Medical Imaging

Background:

Orbital trauma can lead to various ocular complications.
Diplopia is a common symptom requiring thorough diagnostic investigation.
Imaging modalities like CT and ultrasound are crucial for evaluating orbital injuries.

Observation:

A 39-year-old male presented with acute-onset diplopia post-left orbital trauma.
CT and ultrasound revealed left trochlear hyperintensity, initially suspected as a metallic foreign body.
Surgical exploration did not identify any foreign body in the trochlear region.

Findings:

The hyperintensity on imaging was attributed to pre-existing trochlear calcification.
The patient developed a post-traumatic nonconcomitant small-angle vertical deviation causing diplopia.
This case highlights the importance of considering calcification in the differential diagnosis of trochlear abnormalities.

Implications:

Pre-existing calcification can mimic foreign bodies on orbital imaging.
Accurate diagnosis is essential to avoid unnecessary surgical interventions.
Ophthalmologists and radiologists should include calcification in the differential for trochlear hyperintensity after trauma.