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Definitions from WordNet

Noun mydriasis has 1 sense
  1. mydriasis - reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs
    --1 is a kind of
    reflex, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction; dilation, dilatation

Definitions from the Web



Mydriasis refers to the dilation of the pupil, typically resulting from the contraction or relaxation of certain muscles in the iris.

Parts of Speech

  • Noun


Sense 1

A medical condition where the pupil of the eye remains dilated due to various reasons like medications, eye injuries, or neurological disorders.

Example: The doctor diagnosed the patient with mydriasis, as their pupils were excessively dilated, even in bright light.

Sense 2

The intentional dilation of pupils for medical evaluations, such as during an eye examination or a neurological assessment.

Example: The ophthalmologist induced mydriasis in order to get a better view of the patient's retina.

Sense 3

A term used in pharmacology to describe the dilation of pupils caused by certain drugs or substances.

Example: The medication prescribed for the patient's migraines resulted in temporary mydriasis.

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