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Dr. Mayweg, of Hagen, whose assistant the writer is, has made 66 magnet operations during the years 1879-90.
In 15 cases the foreign bodies were lodged in the anterior chamber, iris or lens. The operations took a favorable course in all but one, where severe purulent inflammation had existed before the operation.
In 51 cases the iron splinters lodged in the vitreous chamber. In 13 no foreign body was extracted. Of the 38 in which the foreign bodies had been extracted, the following results were obtained: Two led to enucleation; seven, to phthisis bulbi. Six were lost sight of. Seven preserved the shape of the eye. Sixteen yielded a good result, more or less good vision being permanently restored.
All operations, except the first eight, were performed with a Hirschberg electro-magnet, connected with a storage battery. In most cases this instrument was proved sufficient; in some, however, a stronger magnet
Hildebrand H. Sixty-Six Magnet Operations With Successful Extraction of Particles of Iron From the Inferior of the Eye in Fifty-Three Cases. Arch Ophthalmol. 1996;114(6):762–763. doi:10.1001/archopht.1996.01100130754025