iridoplegia

ir·i·do·ple·gi·a

(ir'i-dō-plē'jē-ă),
Paralysis of the musculus sphincter iridis.
Synonym(s): iridoparalysis
[irido- + G. plēgē, stroke]
Farlex Partner Medical Dictionary © Farlex 2012

ir·i·do·ple·gi·a

(ir'i-dō-plē'jē-ă)
Paralysis of the musculus sphincter iridis.
Synonym(s): iridoparalysis.
[irido- + G. plēgē, stroke]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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).
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Mydriatic pupil observed in the iris which appears to have a normal structure is named congenital mydriasis or familial iridoplegia. Other causes which lead to bilateral mydriasis include toxic conditions (atropine intoxication, Parkinson drugs, antidepressants, carbonmonoxide intoxication, cocaine), conditions secondary to morbidities (migraine, schizophrenia, hyperthyroidism, coma) and Parinaud oculoglandular syndrome.
The apamin has been implicated in the development of ophthalmoplegia (secondary to neuroparalysis of the third cranial nerve), iridoplegia, optic neuritis, papilledema and optic atrophy (2).