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With the means ordinarily at his disposal, it is seldom that the ophthalmic surgeon is unable to satisfy himself of the presence or absence of a foreign body of metallic nature in the eye, should the case-history be at all suspicious... but cases present themselves now and then in which no decision can be rendered, though it may be of vital importance for the safety of the eye, if it contain a foreign body, that operative measures be immediately adopted.
To wait for the onset of inflammatory symptoms—iritis, irido-cyclitis, etc., though they usually give us positive indications—is simply to wait for an excuse as it were to enucleate the eye. To introduce an electro-magnet in a blind attempt to find what may not be present is fraught with too much danger to be resorted to in most cases, and we are therefore too often forced to stand idly by and