For suspected intraocular foreign bodies, which imaging modality is commonly used to detect them?

For suspected intraocular foreign bodies, which imaging modality is commonly used to detect them?

• A. X-ray
• B. CT scan
• C. Ultrasound
• D. MRI

Answer: (A)

When a suspected intraocular foreign body is considered, CT scan is the imaging test of choice because it rapidly provides detailed cross-sectional images of the orbit and globe, and it can detect a wide range of materials, including tiny objects and metal, with high sensitivity. CT can precisely localize the foreign body, assess for associated orbital fractures, and guide management—important for planning surgical removal and evaluating potential damage to eye structures. Plain X-ray can reveal some radiopaque objects, but it misses many materials (like wood, some plastics) and small objects can be hidden by surrounding bone or tissue. Ultrasound can be useful if the eye media are opaque, but it’s avoided if there’s a risk of globe rupture or explosive intraocular injury. MRI is avoided when a metallic foreign body is suspected because of potential movement or heating of the object. So, CT is commonly used because it provides fast, comprehensive detection and localization of intraocular foreign bodies across a wide range of materials.

When a suspected intraocular foreign body is considered, CT scan is the imaging test of choice because it rapidly provides detailed cross-sectional images of the orbit and globe, and it can detect a wide range of materials, including tiny objects and metal, with high sensitivity. CT can precisely localize the foreign body, assess for associated orbital fractures, and guide management—important for planning surgical removal and evaluating potential damage to eye structures.

Plain X-ray can reveal some radiopaque objects, but it misses many materials (like wood, some plastics) and small objects can be hidden by surrounding bone or tissue. Ultrasound can be useful if the eye media are opaque, but it’s avoided if there’s a risk of globe rupture or explosive intraocular injury. MRI is avoided when a metallic foreign body is suspected because of potential movement or heating of the object.

So, CT is commonly used because it provides fast, comprehensive detection and localization of intraocular foreign bodies across a wide range of materials.