Constriction of the pupils of the eyes, mydriasis.
The contraction of the pupil of the eye, as in bright light.
Contraction of the sphincter muscle of the iris causing the pupil to become smaller; it may be caused by an increase in light or by certain drugs.
Abnormal constriction of the iris muscle to decrease the size of the pupil and limit the amount of light entering the eye; associated with stroke, head trauma, and eyedrops containing agents that deactivate acetylcholinesterase.
Constriction of the pupil in the eye. Miosis can result from changes in the muscle fibers of the iris (the colored portion of the eye) or be a sign of certain neurological diseases. Certain glaucoma drops, such as pilocarpine, cause miosis.
Constriction of the pupil. This occurs normally in bright light, but persistent miosis is most commonly due to drug therapy for glaucoma.
Condition of constriction (reduction in size) of the pupil. It may be the result of disease affecting the autonomic nervous system. Bright light causes miosis and some drugs for example, pilocarpine or opium have the same effect.
Abnormal contraction of the pupils, possibly due to irritation of the oculomotor system or paralysis of dilators. Pupillary contraction may occur after a stroke that affects the brainstem or after administration of drugs such as opiates or eyedrops that inactivate acetylcholinesterase.
The narrowing of the eye’s pupil, known as miosis, can result from various factors. It might be induced by medications like pilocarpine or opium, as well as by conditions affecting the autonomic nervous system or exposure to intense light. A certain level of miosis is considered typical in elderly individuals.
The narrowing of the eye’s pupil, also referred to as meiosis.