Definitions for: Mydriasis


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



Webster (1913) Definition: My*dri"a*sis, n. [L., fr. Gr. ?.] (Physiol. & Med.)
A long-continued or excessive dilatation of the pupil of the
eye.

See Also: dilatation, dilation, inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, unconditioned reflex

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