Occult Perforating Globe Injury Caused by Intraocular Foreign Body.

Intraocular foreign bodies (IOFBs) may be associated with occult exit wounds. The authors present a case of a man who sustained a zipper-tooth IOFB through the cornea from a car tire explosion. CT showed an IOFB within the vitreous cavity, but the IOFB was not identified during vitrectomy. Extension of the peritomy revealed an exit wound with the foreign body lodged in the extraocular space. This case demonstrates that IOFBs can rest within the vitreous cavity after creating an exit wound, but may escape detection by being driven back out of the globe during vitrectomy due to the pressurized eye. Coexistent ocular surface and intraocular pathology often limit intraoperative visualization, but a perforating through-and-through injury should be suspected if the IOFB cannot be identified during vitrectomy. [Ophthalmic Surg Lasers Imaging Retina. 2016;47:1162-1163.].