The toxic amblyopias: their classification, history, symptoms, pathology, and treatment . Sometimes there are islands of absolute defect within therelative scotoma. I have described several typical casesof this character. (Fig. 21; also Figs. 22, 23, 24, and 25from Groenouw.) Occasionally a circular scotoma, sur- AMBLYOPIA FROM rill-: ABUSE OF TOBACCO. 79 rounding the fixing point, has been noted in tobacco-amblyopia, for example, by Nelson, Nettleship, and my-self. (Fig. 26.)

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Keywords: ., bookauthordeschwei, bookcentury1800, bookdecade1890, bookyear1896