AbstractMultisection tomography has been used in over 40 patients to localize intraocular foreign bodies. The technique described and the method of determining the position of the foreign body in three planes is illustrated. The apparatus requirement for this technique consists of a linear tomograph and a small 45 deg. set square arranged vertically on a lead base. This is set in position in front of the patient's eye during the exposure, and serves as a calibrator for the tomograph. In practice the method has given accurate results and has been found particularly useful for intraocular localizations in the presence of multiple foreign bodies