hat the piece of steel would be found below the horizontalline of the eyeball, to the temporal side of the vertical one, and20 millimetres from the cornea. The foreign body was subsequentlyremoved by operation from the position indicated. Mr. Davidson applies the photographic plate, fixed in an… … Fig. 84.—Davidsons Eye Apparatus. of this wire, projecting upwards, forms the landmark from whichthe position of the foreign body is calculated. The patient isdirected to gaze steadily at a distant object in an axis parallel withthe plate—that is, straight in front—and two exposures are madeon the…
X-rays · Radiography
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