Bauhaus-Universität Weimar

73 OF THE VITAL AND 
much weakened, the pupil in a dark place will have its edges a little 
retraced by the acfiion of the longitudinal fibres, and in a bright 
light will be fomewhat leffened by the contradlion of the circular 
ones ; but thefe motions will be much more inconfiderable than in 
a found eye. 
In all the cafes above mentioned, the difeafe called by Hippo¬ 
crates, and others among the ancients, %iuspô:\Q7rictt will happen, z. e. the 
patient will fee in the day-time, but in the twilight and night-feafon, 
he will not be able to diftinguifh objects. An inftance of this I 
had lately in a young man of about 27 years of age, who had ferved 
for fome time in the navy, where he had been expofed to much fa¬ 
tigue and cold; his eyes appeared found -, nor could I obferve that 
they differed from the eyes of other people, excepting that the pupil 
had very little motion : it remained always pretty narrow, and was 
neither remarkably contracted by light, nor dilated in the dark. 
This perfon faw well enough in the day-time, efpecially if the wea¬ 
ther was ferene ; but in the twilight, or in an obfcure place, was fo 
far. from diftinguifhing objeCts, that he could fcarcely find his way: 
as his pupil had fome motion, it is probable, that the fibres of the 
iris were not quite paralytic, though much weakened: his feeing in 
the day-time fhewed, that the retina was either wholely, or in a good 
meafure, found 5 and that his blindnefs in a faint light was owing 
to the pupils hot being dilated fo as to admit a fufEcient quantity 
Gf rays into the eye. 
If, after an inflammation of the iris, a rigidity is left on its cir¬ 
cular or longitudinal fibres, the pupil will be deprived, either 
wholely, or in a great meafure, of its ufual motions ; and may be 
either too much contraaed, or greatly dilated: if the former, the 
patient will only fee well by day ; if the latter, the eye will not be 
able to bear a bright light, and therefore the patient will fee befl 
in the fhade and by candle-light 5 u e. he will labour under the dif¬ 
eafe called VIfY.TU\U7riCC. 
Although in an amaurofis the pupil is generally much dilated, 
yet this is not always the cafe ; for as often as the fibres of the 
uvea are intirely deprived of their contraaile powers, the pupil ap¬ 
pears
        

Nutzerhinweis

Sehr geehrte Benutzer,

aufgrund der aktuellen Entwicklungen in der Webtechnologie, die im Goobi viewer verwendet wird, unterstützt die Software den von Ihnen verwendeten Browser nicht mehr.

Bitte benutzen Sie einen der folgenden Browser, um diese Seite korrekt darstellen zu können.

Vielen Dank für Ihr Verständnis.