myosis

• 指瞳孔缩小的现象，通常由虹膜括约肌反射性收缩引起，可因强光刺激或某些药物作用而发生。

A noun referring to the reflex contraction of the sphincter muscle of the iris in response to bright light or certain drugs, causing the pupil to become smaller.

不可数

1. C1formalmedical

   A rare name for epidemic pleurodynia (Bornholm disease): an acute infectious disease that occurs in epidemic form, characterized by sudden, severe attacks of pain, typically in the chest area.

   流行性肌痛

   • The outbreak of myosis caused widespread panic in the region.
   • Patients with myosis often report sharp, stabbing chest pains.
   • Doctors are working to contain the myosis epidemic.

2. Pupil constrictionC1formalmedical

   The reflex contraction of the sphincter muscle of the iris in response to bright light or certain drugs, resulting in a smaller pupil.

   瞳孔缩小

   • The doctor observed myosis in the patient's eyes after administering the medication.
   • Bright light triggers myosis as a natural protective reflex.
   • Certain narcotics can cause extreme myosis.

   同义词miosis

   反义词mydriasis