Recent advances in foreign body extractors

Abstract

The latest technological advances are reviewed and a new instrument dedicated to fe rrous foreign body removal, "the Rare-Earth 10M" , is described . The Rare-Earth intraocular magnet is a simple but powerful instrument that replaces the older and bulkier electromagnets commonly used for the removal of intraocular fe rrous foreign bodies. This instrument does not work at large distances fr om the eye and therefore cannot be used externally.Palavras-chave: corpo estranho intra-ocu lar, imã, ferro e vitrectomia.

Ophthalmic Trauma-Related Instruments—Critical Tools for Winning the Case

“…7). Given the properties and size of rare earth magnets, the magnetic pull-force only becomes significant at ~1 mm and is strongest when in contact with the target 18 . This allows for the gentle removal of metallic IOFBs and minimizes the “jumping” effect that can occur with electromagnets and cause inadvertent damage 18 .…”

“…Given the properties and size of rare earth magnets, the magnetic pull-force only becomes significant at ~1 mm and is strongest when in contact with the target 18 . This allows for the gentle removal of metallic IOFBs and minimizes the “jumping” effect that can occur with electromagnets and cause inadvertent damage 18 . Once a foreign body is engaged by the magnet in the posterior chamber, it is often best to bring the tip of the instrument to the anterior vitreous and pass off the foreign body to IOFB forceps using a handshake technique for removal (Fig.…”