On the localisation of foreign bodies in the eye by x-rays / by Karl Grossmann.
- Karl Großmann
- Date:
- [1899]
Licence: Public Domain Mark
Credit: On the localisation of foreign bodies in the eye by x-rays / by Karl Grossmann. Source: Wellcome Collection.
Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)
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![over, Hud the extraction of the foreign body by help of the electro- magnet had therefore to give v/ay to enucleation. The decision in this case was simple and easy. Had, however, the wound not been in the ciliary region, the removal of the foreign body from within the eyeball might have become advisable. But there might have been a doubt as to whether the foreign body was in the eye itself, or in the orbital cavity outside the eyeball. In the Britwh Medical Journal of January l^t 1898 and Febr. 4'li 1899 M. Mackenzik Davidson published a method of localisation by RoKXTGBN Raj'^s by means of taking two skiagraphs from two diiferent points. These two skiagraphs have to be combined into one stereoscopic image, thereby giving the locality of the foreign body. (See also Biit. Med. Journ. 1898 Febr. 12'li and April 2nd, Geoiige Haerisox, Roentgen Rays and localisation). This method is probably irreplaceable for other parts of the body. But for the eye, another method is applicable which has given me excellent results, and which is distinguished by its great simplicity both in taking the skiagraphs and in interpreting them. The desirability of obtaining two different skiagraphs representing planes which are if possible perpendicular to one another, is manifest. I may mention en passant that amongst other means I have tried to accomplish this by i)lacing a lead ring on the closed eye and having a skiagraph taken through the Avhole diameter of the skull. But althouo-h the riuo; throws a recognisable shadow, the mass of bone and brain and blood is too opaque to give a serviceable shadow of a small foreign body at some distance from the plate. Other skia- graphs were taken from behind and'temporally in a slanting direction, above the zygomatical arch, with a plate which I cut so as to admit a ]iosition monocle fashion. However the shadow of the lead wire ring falls partly outside the plate, the ring in all these instances having a clear diameter of about 26 millimeter. After various other attempts the following method was at last resorted to: For the purpose of oljtainiug a workable parallax of the shadow of the foreign body in the eye the eye itself is used as the movable body, lohile the head, the sensitive plate and the Croohes' tube remain in a fjced position. Tlie patient is first instructed to look downwards at a given point of fixation while the first skiagrajili is taken; then the plate is changed](https://iiif.wellcomecollection.org/image/b21646090_0005.jp2/full/800%2C/0/default.jpg)
