mydriasisn.

Brit.

/mʌɪˈdrʌɪəsɪs/,

/mᵻˈdrʌɪəsɪs/,

/ˌmɪdrɪˈeɪsɪs/, U.S.

/məˈdraɪəsəs/

Origin: A borrowing from Latin. Etymon: Latin mydriasis.

Etymology: < classical Latin mydriasis dilatation of the pupil of the eye (Celsus (1st cent. a.d.)) < Hellenistic Greek μυδρίασις , (Ionic) μυδρίησις (although first attested later, in Galen (2nd cent. a.d.)) < ancient Greek μύδρος mass of red hot material in a forge, or from a volcano (perhaps < μυδᾶν (see mydaleine n.) + -ρος , suffix forming nouns) + -ιασις -iasis suffix, perhaps so called because the pupil is particularly bright or sparkling when dilated. Compare Middle French, French mydriase (1539). N.E.D. (1908) gives only the pronunciation (midriˌēⁱ·sis) /mɪdrɪˈeɪsɪs/.

Medicine.

Dilatation of the pupil of the eye.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of eye > [noun] > disorders of pupil

mydriasis1684

miosis1807

synizesis1817

Argyll Robertson1881

anisocoria1902

1684 tr. S. Blankaart Physical Dict. 203 Mydriasis is a too great Dilatation of the Pupil of the Eye which makes the Sight dim.

1805 Med. & Physical Jrnl. 14 402 Under the term mydriasis, the older writers have comprehended a morbid affection of the iris, and of the retina.

1849–52 Todd's Cycl. Anat. & Physiol. IV. ii. 1466/1 Mydriasis..renders the individual more or less presbyopic.

1892 A. Duane tr. E. Fuchs Text-bk. Ophthalmol. iv. 257 There is a series of alkaloids which produce either dilatation of the pupil (mydriasis) or its contraction (miosis).

1937 Amer. Jrnl. Ophthalmol. 20 176/2 In ophthalmoscopy neo-synephrine has the properties of other epinephrines. It produces mydriasis as quickly, as fully, and as safely as any mydriatic.

1961 Lancet 22 July 170/1 Bringing the pupil aperture to normal in traumatic mydriasis.

1989 Adverse Drug Reactions 8 41 Mydriasis is also the rule in glutethimide and monoamine oxidase inhibitor poisoning, but small pupils are the common finding in barbiturate intoxication.

2001 Ann. Pharmacotherapy 35 870 Rapid reversal of mydriasis in serotonin syndrome by cyproheptadine may serve as a specific suppressive test for the condition.

This entry has been updated (OED Third Edition, June 2003; most recently modified version published online June 2022).

单词	mydriasis
释义	mydriasisn. Brit. /mʌɪˈdrʌɪəsɪs/, /mᵻˈdrʌɪəsɪs/, /ˌmɪdrɪˈeɪsɪs/, U.S. /məˈdraɪəsəs/ Origin: A borrowing from Latin. Etymon: Latin mydriasis. Etymology: < classical Latin mydriasis dilatation of the pupil of the eye (Celsus (1st cent. a.d.)) < Hellenistic Greek μυδρίασις , (Ionic) μυδρίησις (although first attested later, in Galen (2nd cent. a.d.)) < ancient Greek μύδρος mass of red hot material in a forge, or from a volcano (perhaps < μυδᾶν (see mydaleine n.) + -ρος , suffix forming nouns) + -ιασις -iasis suffix, perhaps so called because the pupil is particularly bright or sparkling when dilated. Compare Middle French, French mydriase (1539). N.E.D. (1908) gives only the pronunciation (midriˌēⁱ·sis) /mɪdrɪˈeɪsɪs/. Medicine. Dilatation of the pupil of the eye. ΘΚΠ the world > health and disease > ill health > a disease > disorders of eye > [noun] > disorders of pupil mydriasis1684 miosis1807 synizesis1817 Argyll Robertson1881 anisocoria1902 1684 tr. S. Blankaart Physical Dict. 203 Mydriasis is a too great Dilatation of the Pupil of the Eye which makes the Sight dim. 1805 Med. & Physical Jrnl. 14 402 Under the term mydriasis, the older writers have comprehended a morbid affection of the iris, and of the retina. 1849–52 Todd's Cycl. Anat. & Physiol. IV. ii. 1466/1 Mydriasis..renders the individual more or less presbyopic. 1892 A. Duane tr. E. Fuchs Text-bk. Ophthalmol. iv. 257 There is a series of alkaloids which produce either dilatation of the pupil (mydriasis) or its contraction (miosis). 1937 Amer. Jrnl. Ophthalmol. 20 176/2 In ophthalmoscopy neo-synephrine has the properties of other epinephrines. It produces mydriasis as quickly, as fully, and as safely as any mydriatic. 1961 Lancet 22 July 170/1 Bringing the pupil aperture to normal in traumatic mydriasis. 1989 Adverse Drug Reactions 8 41 Mydriasis is also the rule in glutethimide and monoamine oxidase inhibitor poisoning, but small pupils are the common finding in barbiturate intoxication. 2001 Ann. Pharmacotherapy 35 870 Rapid reversal of mydriasis in serotonin syndrome by cyproheptadine may serve as a specific suppressive test for the condition. This entry has been updated (OED Third Edition, June 2003; most recently modified version published online June 2022). < n.1684
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