Supplementary Material for: Extraction of Magnetic Intraocular Foreign Bodies Using a Novel Magnetic Foreign Body Extractor: Two Cases

Abstract
Purpose：The extraction of intraocular foreign bodies (IOFB) presents a significant challenge in ocular surgery.This report introduces a novel magnetic foreign body extractor specifically designed for the removal of small to medium-sized magnetic IOFBs located in the posterior segment of the eye.
Case Presentation: our report presents two cases of IOFB removal using a novel magnetic foreign body extractor, performed in conjunction with pars plana vitrectomy (PPV). The IOFBs were successfully removed through corneal or limbal incisions with a 23-gauge rechargeable magnetic foreign body extractor, without the need to enlarge the scleral incision.
Results: All procedures, were completed independently, without the use of additional instruments, resulting in no instances of iatrogenic retinal injury, vitreous incarceration, or postoperative proliferative vitreoretinopathy (PVR). Furthermore, both patients showed significant visual improvement, with best-corrected visual acuity (BCVA) improving from counting fingers preoperatively to 0.6 and 0.7 at the 1-month follow-up.
Conclusions: The rechargeable magnetic foreign body extractor, in combination with minimally invasive vitrectomy techniques, offers a safe and effective solution for the removal of magnetic IOFBs in the posterior segment of the eye. This approach not only enhances visual acuity but also reduces the risk of postoperative complications, highlighting its potential as a valuable tool in ocular trauma management.