Mowat, Harold, 1883- · London : H. Frowde · leaf 96
LIZATION OF FOREIGN BODIES 81 In the first the patient is told to look upwardsand keep his eye fixed during the exposure, andin the second to look downwards under the samecircumstances. If the foreign body, when com-paring the radiograms, has altered its position,it must obviously be in the eye.… … Fig. 25. Glass Peothesis. of the foreign body determined. It is necessaryto fix a piece of lead wire to the lower end of thelid, so that its upper pole is exactly opposite thecentre of the pupil when the patient is lookingstraightforward into distance. If the depth of the foreign body is known, it…
X-rays
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