Iatrogenic ocular injuries during cataract surgery caused by cannulas or needles being inadvertently propelled into the eye have been previously described.1,2 These injuries include posterior capsular laceration, vitreous loss, vitreous hemorrhage, 1 and impaled sclera.2 In the January 2003 issue of the ARCHIVES, Prenner et al3 describe a case with posterior capsular laceration, vitreous loss, hemorrhage, and a retinal tear. All reported cases occurred when a cannula or needle accidentally separated from a syringe during injection, causing it to act like a projectile.
Hagan JC. Iatrogenic Projectile Injuries During Eye Surgery. Arch Ophthalmol. 2003;121(6):920-921. doi:10.1001/archopht.121.6.920-a