myosis

• Nom désignant le rétrécissement de la pupille de l'œil, provoqué par la contraction réflexe du sphincter de l'iris en réponse à une lumière vive ou à l'action de certains médicaments.

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.

indénombrable

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.

   Pleurodynie épidémique

   • 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.

   Myosis (constriction pupillaire)

   • 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.

   Synonymesmiosis

   Antonymesmydriasis