In a former paper,1 introductory to this series, it was related that reliable perimetric observations had been possible in 123 patients in a series of 200 cases of cerebral tumors. These had shown normal fields in twenty-seven instances a tendency toward hemianopsia in forty-two, and colorinterlacing or inversion (dyschromatopsia), with more or less symmetrical constriction, in fifty-three instances. It is our present purpose to give specific illustrations of the cases showing dyschromatopsia and to correlate them, so far as possible, with the stages of an advancing choked disk, especial emphasis being laid on the field deviations coincident with, or antecedent to, the earliest ophthalmoscopic changes.
There have been ten cases of tumor which have shown color-interlacing, either in the total absence of a choked disk or with a very incipient process observable in the eye-grounds. As the reader will surmise, therefore, these represent cases in which definite localizing (irritative)
CUSHING H, HEUER GJ. DISTORTIONS OF THE VISUAL FIELDS IN CASES OF BRAIN TUMOR: (Second Paper) DYSCHROMATOPSIA IN RELATION TO STAGES OF CHOKED DISK. JAMA. 1911;LVII(3):200–208. doi:10.1001/jama.1911.04260070204008
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