pupil /pu·pil/ (P) (pu´pil) the opening in the center of the iris through which light enters the eye.pu´pillary
Argyll Robertson pupil
pupil (P) [pu´pil]
Argyll Robertson pupil (ärgil´),
Adie's pupil tonic p.
Argyll Robertson pupil one that is miotic and responds to accommodative effort, but not to light.
fixed pupil one that does not react either to light or on convergence, or in accommodation.
Hutchinson's pupil one that is dilated while the other is not.
tonic pupil a usually unilateral condition of the eye in which the affected pupil is larger than the other; responds to accommodation and convergence in a slow, delayed fashion; and reacts to light only after prolonged exposure to dark or light.
Ar·gyll Rob·ert·son pupil (är-g l r b rt-sn)n. A pupil that contracts or expands to accommodate changes in focal length but does not respond to light. |
Argyll Robertson pupil
Etymology: Douglas M.C.L. Argyll Robertson, Scottish ophthalmologist, 1837-1909
a pupil that constricts on accommodation but not in response to light. It is most often seen with miosis and in advanced neurosyphilis.
pupil (P) [pu´pil]
the opening in the center of the iris through which light enters the eye; see also Plate 17.
Adie's pupil tonic pupil.
Argyll Robertson pupil one that is miotic and responds to accommodation effort, but not to light.
fixed pupil a pupil that does not react either to light or on convergence, or in accommodation.
Hutchinson's pupil one that is dilated while the other is not.
tonic pupil a usually unilateral condition of the eye in which the affected pupil is larger than the other, responds to accommodation and convergence in a slow, delayed fashion, and reacts to light only after prolonged exposure to dark or light; see also adie's syndrome. Called also Adie's pupil.
Argyll Robertson pupil (ärgil´),
n.pr See pupil, Argyll Robertson.
pupil
the aperture in the center of the iris which regulates the amount of light that reaches the retina.
Adie's pupil
dilated pupil due to parasympathetic denervation.
Argyll Robertson pupil
one that is miotic and responds to accommodation effort, but not to light.
fixed pupil
a pupil that does not react either to light or on convergence, or in accommodation.
multiple p's
polycoria.
occluded pupil
a congenital or acquired pupillary membrane that obstructs the pupil.
secluded pupil
a complete posterior synechia that separates the anterior and posterior chambers of the anterior compartment.
spastic pupil syndrome
anisocoria with pupils that fail to dilate in darkness. Seen in cats infected with feline leukemia virus. The virus has been observed in the short ciliary nerves and ciliary ganglia of some affected cats.
tonic pupil
see pupilloplegia.
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