Search
miosis (pupillary constriction)
Contraction or constriction of the pupil.
Etiology:
- Horner syndrome
- pancoast tumor
- pharmaceutical agents
- antineoplastic agents
- tramadol
- codeine
- opiates
- fentanyl
- morphine
- heroin
- methadone
- antipsychotics
- haloperidol
- olanzapine
- quetiapine
- parasympathomimetics
- acetylcholine
- bethanechol
- carbachol
- cholinesterase inhibitor
- pilocarpine
- phisostigmine
- neostigmine
- lobeline
- methacholine
- MAO inhibitors
- mirtazapine
- trazodone
- phenoxybenzamine
- poisoning
- donepezil toxicity
- organophosphate toxicity
- clonidine toxicity
- phencyclidine toxicity
- intracranial hemorrhage
- pontine hemorrhage
- lateral medullary syndrome
- migraine
- cluster headache
- cerebrovascular arteriosclerosis
- corneal foreign body
- corneal ulcer
- hyphema
- acute iritis
- uveitis
- neuropathy
- Parry-Romberg syndrome
- Wallenberg's syndrome
Physiology:
- miosis & visual accomodation are controlled by the oculomotor nerve (parasympathetic).
Notes: also see mydriasis (dilation of the pupil)
Related
mydriasis
General
sign/symptom
References
- Stedman's Medical Dictionary 24th ed, Williams &
Wilkins, Baltimore, 1982
- Causes of miosis
http://www.wrongdiagnosis.com/symptoms/miosis