MYDRIASIS

Pronunciation (US):

(GB):

 Dictionary entry overview: What does mydriasis mean? 

• MYDRIASIS (noun)
  The noun MYDRIASIS has 1 sense:

1. reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs

  Familiarity information: MYDRIASIS used as a noun is very rare.

 Dictionary entry details 

• MYDRIASIS (noun)

Sense 1

Meaning:

Reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs

Classified under:

Nouns denoting acts or actions

Hypernyms ("mydriasis" is a kind of...):

dilatation; dilation (the act of expanding an aperture)

inborn reflex; innate reflex; instinctive reflex; physiological reaction; reflex; reflex action; reflex response; unconditioned reflex (an automatic instinctive unlearned reaction to a stimulus)

 Context examples 

When applied topically to the eye, dilation of the pupil (mydriasis) and paralysis of accommodation (cycloplegia) result from the local anticholinergic effects on the ciliary muscle and iris.

(Homatropine Hydrobromide, NCI Thesaurus)

This dilates the pupil, producing mydriasis, and prevents the eye from accommodating.

(Cyclopentolate Hydrochloride, NCI Thesaurus)