| 释义 |
mydriasisenUK
my·dri·a·sis M0507700 (mĭ-drī′ə-sĭs)n. Dilation of the pupil of the eye, especially when excessive or prolonged, usually as a result of trauma, a medical disorder, or a drug.
[Latin mydriāsis, from Greek mudriāsis, perhaps from mudros, red-hot mass of metal in a forge (in reference to the more brilliant appearance of the dilated pupil to ancient physicians, as a result of light reflected off the fundus of the eye ); possibly akin to mudān, to be damp, dripping ( mudros perhaps originally referring to molten iron).]mydriasis (mɪˈdraɪəsɪs; maɪ-) n (Pathology) abnormal dilation of the pupil of the eye, produced by drugs, coma, etc[C17: via Late Latin from Greek; origin obscure]my•dri•a•sis (mɪˈdraɪ ə sɪs, maɪ-)
n. excessive dilatation of the pupil of the eye, as the result of disease, drugs, or the like. Compare miosis. [1650–60; < Latin mydriāsis < Greek mydríāsis, appar. derivative of mýdros hot mass of iron, though sense connection unclear] mydriasisabnormal dilatation of the pupil, the result of disease or the use of certain drugs. Cf. miosis. — mydriatic, adj.See also: EyesThesaurus| Noun | 1. | mydriasis - reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugsdilatation, dilation - the act of expanding an aperture; "the dilation of the pupil of the eye"inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex - an automatic instinctive unlearned reaction to a stimulus |
TranslationsmydriasisenUK
mydriasis[mə′drī·ə·səs] (medicine) Prolonged dilation of the pupil of the eye. mydriasisenUK
mydriasis [mĭ-dri´ah-sis] great dilatation of the pupil.my·dri·a·sis (mi-drī'ă-sis), Dilation of the pupil. [G.] mydriasis (mĭ-drī′ə-sĭs)n. Dilation of the pupil of the eye, especially when excessive or prolonged, usually as a result of trauma, a medical disorder, or a drug. my·dri·a·sis (mi-drī'ă-sis) Dilation of the pupil. [G.]mydriasis Widening (dilatation) of the pupil of the eye, usually as a result of instillation of a mydriatic drug, such as ATROPINE or CYCLOPENTOLATE.mydriasis1. Dilatation of the pupil. 2. The condition of an eye having an abnormally large pupil diameter (5 mm in daylight). The condition may be due to a paralysis of the sphincter pupillae muscle, to an irritation of the sympathetic pathway, to a drug (e.g. atropine, homatropine), or to adaptation to darkness. See miosis; dilator pupillae muscle; mydriatic; pupil.my·dri·a·sis (mi-drī'ă-sis) Dilation of the pupil. [G.]mydriasisenUK
Words related to mydriasisnoun reflex pupillary dilation as a muscle pulls the iris outwardRelated Words- dilatation
- dilation
- inborn reflex
- innate reflex
- instinctive reflex
- physiological reaction
- reflex
- reflex action
- reflex response
- unconditioned reflex
|