File:Transactions (1880) (14759032826).jpg

Identifier: transactions03opht (find matches)
Title: Transactions
Year: 1880 (1880s)
Authors: Ophthalmological Society of the United Kingdom
Subjects: Ophthalmology
Publisher: London J. & A. Churchill
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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about to test his colour vision by Holmgren^s method hesaid he had found it most difficult to distinguish colourssince the attack in November. Nevertheless he performedHolmgrens tests with accuracy. I then examined hisfields of vision with coloured wools, and ascertained thatthe left side of the field in each eye was colour blind. IIKMIACTIROMATOrSIA. 187 while ^vitl, tl,o right side colours could be distinguished,although in un =nra more restricted than normally (videchart) I took much trouble to ascertain whether the Imoof demarcation for colour perception ran through the fixa-tion point, or circumvented that point as does the analogousline in cases of ordinary hemianopsia, and I was able to
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satisfy myself that the former arrangement existed. In theaccompanying chart the boundary for blue alone is madeto pass along the median line, because it was not possible torepresent in the diagram the actual condition, m which themedian boundary line for every colour was coincidentRed, blue, and green, were the only colours with which 188 FDNCTIONAL AFFECTIONS. the patient was tested, for I did not wish to lengthen theexamination for him by testing with the other and lesaimportant colours. Five other cases of chromatic hemianopsia have beenobserved. 1. By Landolt (^ Charpentiers These/ 1878).A young man with a cerebral affection, particulars ofwhich, and of the other symptoms, I cannot obtain. 2.By Samelsohn of Cologne ( Centralblatt fiir die Med.Wisssensch., 1881, No. 47). The patient was a man ast.63 whose impairment of vision dated from an apoplecticattack, attended with right hemiplegia, occurring ninemonths before Dr. Samelsohn was consulted. Sensibilityhad by that time quite re

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