miosis


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Related to miosis: meiosis, Horner's syndrome

miosis

 [mi-o´sis]
excessive contraction of the pupil.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

mi·o·sis

(mī-ō'sis), Do not confuse this word with meiosis.
1. Contraction of the pupil.
2. Incorrect alternative spelling for meiosis.
[G. meiōsis, a lessening]
Farlex Partner Medical Dictionary © Farlex 2012

miosis

also

myosis

(mī-ō′sĭs)
n. pl. mio·ses (-sēz)
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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

miosis

Contraction of the pupil.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

miosis

Contraction of the pupil. Cf Mydriasis.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

mi·o·sis

(mī-ō'sis)
1. Contraction of the pupil.
2. Incorrect alternative spelling for meiosis.
[G. meiōsis, a lessening]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

miosis

Constriction of the pupil.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

miosis

Contraction of the pupil or condition in which the pupil is very small (2 mm or less in diameter). It can be brought about by a spasm of the sphincter muscle or by the effect of a miotic drug (e.g. eserine, neostigmine, pilocarpine), or in certain spinal diseases or any stimulation of the parasympathetic supply to the eye. Miosis occurs naturally when doing close work or when stimulated by light. Note: also spelt myosis. See corneal reflex; pupil light reflex; baring of the blind spot; Horner's syndrome.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

mi·o·sis

(mī-ō'sis)
Contraction of the pupil.
[G. meiōsis, a lessening]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Thus, individuals that do not express such genotype tend to develop mydriasis when treated with tramadol; while the ones that express CYP2D6, miosis was observed (PEREZ et al., 2016).
The pretreatment with femtosecond laser-assisted cataract surgery (FLACS) platforms during cataract surgery has been associated with pupillary miosis [4-6]; the latter has been attributed to the increase of inflammatory mediator (prostaglandins) concentration in the anterior chamber (AC) after FLACS [7, 8].
Se evalua la forma de las pupilas, que sean redondas, que se encuentren simetricas y el grado de miosis (contraccion) o midriasis (dilatacion) en el que se encuentren, y para esto se considera que el tamano pupilar en condiciones normales es de 3 mm.
These results indicate that the boost of TR and M1 plasma concentration is correlated with the occurrence of miosis in rabbits after F2 administration (Figure 4).
The sympathetic nervous system (SNS) usually mediates pupillary dilation (mydriasis), while the parasympathetic nervous system, via the oculomotor nerve (cranial nerve III) and its modulatory effect over the ciliary autonomic ganglion, mediates pupillary constriction (miosis) [20, 21].
Spasm of the near reflex is a disorder characterised by intermittent episodes of convergence, miosis and accommodation.
With ocular exposure, the onset of lacrimation, irritation, pruritis, burning, blepharospasm, and possible miosis occurs within 4 to 12 hours.
Ocular effects of prostaglandins include increased or decreased intraocular pressure (IOP), local vasodilation and increased permeability of the blood-aqueous barrier and miosis. 3
Muscarinic symptoms such as nausea, vomiting, diarrhea, sweating, salivation, urination, stool incontinence, lacrimation, miosis, and bradycardia and nicotinic signs such as mascular weakness, fasciculation, paralysis, convulsion, and coma are found.
Characteristics of Horner's Syndrome or sympathetic blockage include ptosis, miosis, anhidrosis, and a slight increase in body temperature (Lipov et al., 2013) and nasal congestion (Gutierrez, 2015).The complication rate of SGB is 1.7 per 1,000 procedures, indicating high safety with low complications (Kime, 2014).
The product is intended for use in cataract surgery and lens replacement procedures to maintain mydriasis (pupil dilation), prevent miosis (pupil constriction), and to decrease postoperative eye pain.