Surgical treatment; a practical treatise on the therapy of surgical diseases for the use of practitioners and students of surgery . foreign bodies from the interior of the globe has been dis-cussed (page 129). Small bodies free in the vitreous, gravitate to the position should be determined by the x-ray. Then a small incisionmay be made through the wall at a suitable position, and the body pickedout; or, if not close to the incision, it may be brought there by the use ofa magnet. These bodies may best be removed with a large electromagnet. Prepara-tions for an aseptic operation sh
Surgical treatment; a practical treatise on the therapy of surgical diseases for the use of practitioners and students of surgery . foreign bodies from the interior of the globe has been dis-cussed (page 129). Small bodies free in the vitreous, gravitate to the position should be determined by the x-ray. Then a small incisionmay be made through the wall at a suitable position, and the body pickedout; or, if not close to the incision, it may be brought there by the use ofa magnet. These bodies may best be removed with a large electromagnet. Prepara-tions for an aseptic operation should be made. The eye is patient is placed in a vertical position with the head supported tosteady it. A giant electromagnet, having a conical end to its pole, ismade to approach the eye exactly in front of the center of the cornea. Themagnet should be made first to act at some distance. As it approaches theeye and the current is opened and closed, the foreign body will often be drawnaround the lens and through the pupil into the anterior chamber. Thisusually means considerable wounding of the ciliary Fig. 822.—Fat Transplantationinto the Orbit after Enucleationof the Eyeball. The recti muscles have been pre-served and sewed to the purse-string suture is about to closethe conjunctival opening. TREATMENT OF INJURIES AND DISEASES OF THE HEAD 161 It is better surgery to locate the body exactly by the s-ray, and, havingmade an incision through the sclera as near it as possible, apply the point ofthe electromagnet, or an extension point, at the lips of the wound. Operations for glaucoma are mentioned above (page 131). Iridectomy(page 154) and sclerotomy (page 156) are the operations most simple chronic cases with but slight or intermittent tension, sclerectomyproduces an adequate filtration cicatrix. Iridectomy must be added in thecases of constant high tension. It is possible to combine these operations insuch a way as to meet th
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