iridoplegia /iri·do·ple·gia/ (-ple´jah) paralysis of the sphincter of the iris.
iridoplegia
ir·i·do·ple·gia ( r -d -pl  j ,  r-)n. Paralysis of the sphincter of iris. Also called iridoparalysis. |
iridoplegia
[ī′ridōplē′jə]
Etymology: Gk, iris, rainbow, plege, stroke
a condition of paralysis of the sphincter muscle of the iris or the dilator muscle or both.
iridoplegia
paralysis of the sphincter of the iris, with lack of contraction or dilatation of the pupil; called also iridoparalysis.
iridoplegia
Paralysis of the sphincter muscle of the iris resulting in a dilated pupil. The iridoplegia can be partial as in Argyll Robertson pupil, or complete in which case the pupil does not react to light or to a near object. It may be due to trauma, drugs (e.g. cocaine instilled in the eye) or a systemic disease (e.g. neurosyphilis).
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