Clinical Case Notes. Unusual cause for non-detition of retained metallic foreign body on ocular ultrasonography.

摘要

Abstract Ultrasound biomicroscopy has become a valuable adjunct in the evaluationof occult ocular foreign bodies. An unusual cause for non-detectionof a metallic retained intraocular foreign body is described. Inthis case, the usual 'shadowing' was not discernibleas the foreign body was lying just over the optic disc.