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Related Experiment Video

Updated: Jun 29, 2026

Iris Fixation via External Pentagram Suturing

Iris Fixation via External Pentagram Suturing

Published on: May 5, 2022

An unusual intaocular foreign body.

Antonio Romano¹, Nicola Rosa, Mario Bifani

¹Eye Department, Second University of Naples, Naples, Italy.

Ophthalmic Surgery, Lasers & Imaging : the Official Journal of the International Society for Imaging in the Eye

|July 24, 2003

Summary

A surgical needle, an unusual foreign body, was found in a patient's eye after magnetic resonance imaging. Plain X-rays before MRI may help detect such retained surgical instruments.

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Area of Science:

Ophthalmology
Radiology
Medical Imaging

Background:

Ocular siderosis is a condition caused by iron-containing foreign bodies in the eye.
Magnetic resonance imaging (MRI) is a powerful diagnostic tool but carries risks with certain metallic objects.

Observation:

A 60-year-old male patient presented with ocular siderosis.
A surgical needle was identified within the eye post-cerebral ischemia MRI scan.

Findings:

The retained surgical needle was an unusual foreign body in the ocular region.
The presence of the needle was discovered after MRI, not before.

Implications:

Pre-procedural plain X-rays are recommended for patients with a history of surgery before undergoing MRI.
This case highlights the importance of identifying metallic foreign bodies to prevent complications like ocular siderosis.