1. Contraction of the pupil. 2. Incorrect alternative spelling for meiosis. [G. meiosis, a lessening]
- paralytic m. m. due to paralysis of the dilator muscle of the pupil.
- spastic m. m. due to spasmodic contraction of the sphincter muscle of the pupil.

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mi·o·sis also my·o·sis mī-'ō-səs, mē- n, pl mi·o·ses also my·o·ses -.sēz excessive smallness or contraction of the pupil of the eye

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constriction of the pupil. This occurs normally in bright light, but persistent miosis is most commonly caused by certain types of eye drops used to treat glaucoma. See also miotic. Compare mydriasis.

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mi·o·sis (mi-oґsis) [Gr. meiōsis diminution] contraction of the pupil.

Miosis and eyelid ptosis of the left eye in Horner syndrome.

Medical dictionary. 2011.

Look at other dictionaries:

  • miosis — f. oftalm. Estenocoria. Medical Dictionary. 2011. miosis 1. contracci …   Diccionario médico

  • miosis — (plural miosis) sustantivo femenino 1. Área: medicina Contracción anormal y permanente de la pupila del ojo …   Diccionario Salamanca de la Lengua Española

  • Miosis — (Rhet.), so v.w. Meiosis …   Pierer's Universal-Lexikon

  • Miōsis — (Meiosis, griech.), Verkleinerung, besonders als rhetorische Figur, im Gegensatz zu Hyperbel (s. d.). In der Pathologie: abnorme dauernde Verengerung der Pupille, kommt bei Gehirnleiden durch Reizung der betreffenden Nerven oder durch Lähmung von …   Meyers Großes Konversations-Lexikon

  • Miosis — Miōsis (grch.), Verengerung der Pupille (s.d.) …   Kleines Konversations-Lexikon

  • miosis — (n.) 1819, from Gk. myein to shut (the eyes) + OSIS (Cf. osis). Greek myein is perhaps originally to close the lips, from PIE *meue to be silent (see MUTE (Cf. mute) (adj.)). Related: Miotic …   Etymology dictionary

  • miosis — (Del gr. μύειν, guiñar los ojos, y sis). f. Med. Contracción permanente de la pupila del ojo …   Diccionario de la lengua española

  • miosis — [mī ō′sis] n. pl. mioses [mī ō′sēz΄] [ModL < Gr myein, to close (< IE base * mu : see MUTE) + OSIS] contraction of the pupil of the eye miotic [mīät′ik] adj., n …   English World dictionary

  • Miosis — Para la división celular, véase Meiosis y Mitosis. Miosis Miosis del ojo izquierdo, véase la diferencia de apertura de la pupila en ambos ojos. Clasificación y recursos externos …   Wikipedia Español

  • Miosis — Not to be confused with meiosis, mitosis, or myositis. Miosis Classification and external resources Slight miosis of the left eye (there is also concurrent partial ptosis on the left, most likely part of Horner s syndrome …   Wikipedia

  • Miosis — Klassifikation nach ICD 10 H57.0 Pupillenfunktionsstörungen …   Deutsch Wikipedia

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