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By Hrishikesh Naik, MS
Sassoon General Hospitals - Uploaded on Dec 28, 2025.
- Last modified by Joshua Friedman on Jan 7, 2026.
- Rating
- Appears in
- Miscellaneous
- Condition/keywords
- IOFB, Metallic RIOFB
- Photographer
- Hrishikesh Naik
- Imaging device
-
Ultrasonography device
BioMedix - Description
- A 10 MHz B-scan ultrasonography image depicting the double optic nerve head shadow sign, the true optic nerve shadow superiorly along with the pseudo optic nerve shadow in the center. The scan reveals a hyperechoic lesion with 100% reflectivity even at a low gain (46 dB) within the posterior outer coats of the eye with posterior acoustic shadowing suggestive of IOFB. Small intraocular foreign bodies in the outer coats of the eye may be wrongly interpreted as optic nerve head on ultrasound imaging. Such errors can be avoided by performing multiple sonography scans in different axes and confirming the same with additional imaging modalities such as a CT scan.
