Take plain films: front and side views of the suspected eye.
Reference lines: With some drops of 0.5% tetracaine (Pontocaine) solution anesthetize the eye, in order to attach at the sclerocorneal limbus the regular nonabsorbable surgical (silk) Atraumatic suture needles (⅜ circle ⅝ in. long, preferably).* The needles are passed through the conjunctiva and Tenon's capsule as close as possible to the cornea, starting about 1.5 mm. above and below the 3 o'clock or 9 o'clock position on the cornea, trying to mark the limbus surrounding the cornea in order to get its center.
Immediately take the following films:
Front view: looking straight ahead, both orbits; central ray focused on the center of the cornea
Front view: looking right, both orbits
Front view: looking left, both orbits
Front view: looking up, both orbits
Front view: looking down, both orbits The films B, C, D and E should be taken without
ROSAS FE. Localization of Intraocular Foreign Bodies by Roentgen ExaminationPractical Procedure. AMA Arch Ophthalmol. 1957;57(2):245-249. doi:10.1001/archopht.1957.00930050255014