Tobacco amblyopia in a woman, with anomalous scotomas / by G. E. de Schweinitz.

  • De Schweinitz, G. E. (George Edmund), 1858-1938.
Date:
[1897]
Catalogue details

Licence: Public Domain Mark

Credit: Tobacco amblyopia in a woman, with anomalous scotomas / by G. E. de Schweinitz. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

    8/10 (page 6)
    toma, instead of being centrall}^ placed, has a situation between 5 and 30 degrees to the temporal side of the fixing spot, as represented in the accompanying diagram,—a scotoma closely resembling the one which I report. Whether in the present instance there was a preexist- ing area of defective color-sense, which was intensified by tobacco poisoning and therefore retained its original shape, is a matter of pure speculation. It would seem, however, as the defect is symmetrical, and that the right eye, which was the seeing eye, is affected exactly as is the left which was the partially amblyopic eye, that not much information is to be gained from this point of view. Evidently the whole question of the formation of scotomas in toxic amblyopia is unsettled. We are not even sure that a perfectl}^ pure tobacco case exists in the sense that there is no other etiological factor except tobacco. Therefore the record of each new case, with variations in the scotoma, is desirable. Much more to be desired is a continuation of the experimental work connected with this question. On this point I shall have more to say in a subsequent communication.