Myosis
nounverified·updated May 18, 2026
reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
Framework senses
- §1
- reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
- §2
- an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)