“…In the previtrectomy era, an external electromagnet (EEM) was used for ferromagnetic materials, and early IOFB removal was encouraged to prevent IOFB encapsulation, which could overcome the pulling force of the EEM [35,36]. The advent of modern vitrectomy techniques and the use of intraocular forceps [37,38] and intraocular magnets [39,40], however, have greatly improved the surgical control of the removal of ferromagnetic materials [8]. One study [41] comparing the use of electromagnet for ferrous IOFB removal in 30 eyes versus PPV techniques in 34 eyes found that anatomic and functional outcomes were significantly better in eyes undergoing PPV.…”