. Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray . Fig. 209.—X-ray in eye surgery. Oblique position. obliquely through the center of the cornea of the patients affectedeye, as shown in Fig. 209. The photographic plate must now beshifted by pushing the plate-holder inward by its handle as far asit will go, thereby protecting that portion that was acted upon bythe rays in the first exposure, and bring its unexposed half in properposition to receive the rays from the second exposure.
. Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray . Fig. 209.—X-ray in eye surgery. Oblique position. obliquely through the center of the cornea of the patients affectedeye, as shown in Fig. 209. The photographic plate must now beshifted by pushing the plate-holder inward by its handle as far asit will go, thereby protecting that portion that was acted upon bythe rays in the first exposure, and bring its unexposed half in properposition to receive the rays from the second exposure. In this posi-tion the second exposure is made, with the rays falling obliquelyupon the indicators, separating their shadows as seen in (1). 396 PRACTICAL ELECTRO-THERAPEUTICS AND X-RAY THERAPY The exposures need not be made with the light at any specific dis-tance from the plate, or even the same distance for the two ex-. posures, and neither is it important that the tube be shifted an exactor known distance for the second exposure, as by the use of thecharts and Doctor Sweets method the course of the rays are auto- X-RAY IN EYE SURGERY. 397 matically established, as is shown by lines Fx-P and Pl-P2 inFig. 211. The two exposures having been successfully made as directed, theplate-holder can now be removed and taken to the dark-room, whereit should be opened and the plate developed, and, if found to becorrect, the patient should be released.
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1912
