miosis


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Related to miosis: meiosis, Horner's syndrome

mi·o·sis

also my·o·sis (mī-ō′sĭs)
n. pl. mi·o·ses (-sēz) also my·o·ses
Constriction of the pupil of the eye, resulting from a normal response to an increase in light or caused by certain drugs or pathological conditions.

[Greek mūein, to close the eyes + -osis.]

miosis

(maɪˈəʊsɪs) or

myosis

n, pl -ses (-siːz)
1. (Pathology) excessive contraction of the pupil of the eye, as in response to drugs
2. (Biology) a variant spelling of meiosis1
[C20: from Greek muein to shut the eyes + -osis]
miotic, myotic adj, n

mi•o•sis

or my•o•sis

(maɪˈoʊ sɪs)

n.
excessive constriction of the pupil of the eye.
Compare mydriasis.
[1810–20; variant of myosis < Greek mý(ein) to shut (the eyes) + -osis]

miosis, myosis

abnormal constriction of the pupil of the eye, caused by drugs or illness. Cf. mydriasis. — miotic, myotic, adj.
See also: Eyes
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.miosis - (genetics) cell division that produces reproductive cells in sexually reproducing organismsmiosis - (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
anaphase - the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
cell division, cellular division - the process in reproduction and growth by which a cell divides to form daughter cells
cytokinesis - organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells
karyokinesis - organic process consisting of the division of the nucleus of a cell during mitosis or meiosis
metaphase - the second stage of meiosis
nondisjunction - meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells
prophase - the first stage of meiosis
segregation - (genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes
telophase - the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle
2.miosis - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smallermiosis - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
Translations

mi·o·sis

n. miosis, contracción excesiva de la pupila.
References in periodicals archive ?
Diclofenac eye drops are used to prevent miosis in and treat inflammations after cataract extraction, treat non-infectious eye inflammations caused or not caused by surgeries, prevent postoperative inflammatory reactions and the formation of cystoid macular edema, promote the formation of filtration blebs after glaucoma filtering surgeries, and treat allergic conjunctivitis.
for use during cataract surgery or intraocular lens (IOL) replacement to maintain pupil size by preventing intraoperative miosis (pupil constriction) and to reduce postoperative ocular pain.
The company's drug product Omidria (phenylephrine and ketorolac intraocular solution) 1% / 0.3% is marketed in the US for use during cataract surgery or intraocular lens replacement to maintain pupil size by preventing intraoperative miosis (pupil constriction) and to reduce postoperative ocular pain.
* When combined with fentanyl, heroin becomes 50 to 100 dmes more potent, resulting in a subjective high with exaggerated central nervous system depression manifesting as lethargy, miosis, and respiratory depression.
Overstimulation of the parasympathetic axons that innervate the iris sphincter muscle initiates painful miosis, even with mild nerve-agent vapor exposures.
Clinical features of this syndrome include ptosis, miosis, and anhidrosis.
Contralateral miosis may be a consequence of direct stimulation of the optic nerve through the thin interorbital septum.
Omidria, approved and commercially available in the U.S., is also approved in the European Union for use in cataract and lens replacement surgery to maintain mydriasis, prevent miosis and to reduce postoperative eye pain.
On admission, neurologic physical examination showed dysarthria, bilateral miosis, slow pupillary light reflex, weakened pharyngeal reflex, reduction in the right limb strength (right arm strength grade 4/5, right leg strength grade 2/5), and hemihypesthesia of the right limb.
The diabetic eye is more susceptible to surgical trauma due to longer duration of surgery, more pronounced miosis and a transient elevation of intraocular pressure [17, 18].
Ademas, pueden ocurrir nauseas, emesis, miosis o midriasis, hiperglicemia y glucosuria, depresion respiratoria, convulsiones y alteraciones del estado de conciencia [20-26].