The commoner diseases of the eye : how to detect and how to treat them . The Haab (giant) Electromagnet. an attempt should be made to locate it with theRoentgen rays. A skiagram should at once betaken of the orbital region so that it a foreignl)(nl\ be present its size and position may be indi-cated. It the missile be a piece of iron or steel,it may, most satisfactorily, be extracted by means COMMONER INJURIES OF THE EYE 33^ of the electro-magnet. The best of these is thegiant magnet of Haab. When this instrumentis not available one of the smaller magnets willanswer the purpose in most instanc
The commoner diseases of the eye : how to detect and how to treat them . The Haab (giant) Electromagnet. an attempt should be made to locate it with theRoentgen rays. A skiagram should at once betaken of the orbital region so that it a foreignl)(nl\ be present its size and position may be indi-cated. It the missile be a piece of iron or steel,it may, most satisfactorily, be extracted by means COMMONER INJURIES OF THE EYE 33^ of the electro-magnet. The best of these is thegiant magnet of Haab. When this instrumentis not available one of the smaller magnets willanswer the purpose in most instances. If thesemeans fail the question of removal of the eyeballpresents itself. Although casts are on record where particlesof metal have been retained within the globe foryears without causing trouble, they are always asource of danger not only to the eye withinwhich they are lodged but to the opposite ^|nti. The Small, or Hand, Magnet. Foreign bodies upon which the magnet has noeffect, such as pieces of copper, stone and glass,should be removed by a pair of forceps introducedeither through the original opening (which shouldbe enlarged if necessary), or through anothermade for that purpose. Much loss of vitreousas a rule accompanies such a proceeding. If theprocedure is unsuccessful enucleation of the eye-ball is indicated. Sympathetic ophthalmia is a plastic inflam-mation of the iris, ciliary body and choroid (uveal 338 COMMONER DISEASES OF THE EYE tract) following an infection of the other eyeset up by microorganisms introduced from with-out, as a result of perforating wounds of theglobe. The injured eye is called the exciting eye; itsfellow is known as the sympathising eye. Symptoms.—At first there are signs of irri-tation only in the sympathizing eye. The pa-tient complains of photophobia, lachrymation,blurring of the vision for near work and tender-ness in the ciliary region. These
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