Imaging Considerations in Suspected Intraocular Foreign Bodies

The mechanisms of trauma resulting in IOFBs vary greatly and play a critical role in establishing the material responsible for injury. The most common place of injury is the workplace [6] and IOFBs ultimately result in 3.3% of all occupational injuries causing lost workdays [7]. Injury most commonly results from hammering (60-80% of IOFBs), but use of power tools and firearms also constitute common mechanisms of injury [4]. Penetrating foreign bodies most commonly enter through the cornea [8] with a majority being ultimately found in the posterior segment [9]. Given the common mechanisms of injury, it is unsurprising that most IOFBs are metallic in origin; however, organic materials (e.g., wood, thorns, and hair) are also common culprits and pose unique challenges in detection.