mydriasis

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my·dri·a·sis

(mĭ-drī′ə-sĭs)

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).]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

mydriasis

(mɪˈdraɪəsɪs; maɪ-)

(Pathology) abnormal dilation of the pupil of the eye, produced by drugs, coma, etc

[C17: via Late Latin from Greek; origin obscure]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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]

mydriasis

abnormal dilatation of the pupil, the result of disease or the use of certain drugs. Cf. miosis. — mydriatic, adj.

my·dri·a·sis

n. midriasis, dilatación prolongada de la pupila.

English-Spanish Medical Dictionary © Farlex 2012

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Results of the present study show that topically applied rocuronium bromide induced a consistent mydriasis in all of the treated eyes of the birds in this study.

Safety and efficacy of bilateral topical application of rocuronium bromide for mydriasis in European kestrels (Falco tinnunculus)

OMS302, added to standard irrigation solution used during ophthalmological procedures, is Omeros' proprietary PharmacoSurgery product in development to maintain intra-operative mydriasis (pupil dilation) and reduce postoperative pain and irritation resulting from cataract and other lens replacement surgery.

Omeros' reports achievement of co-primary endpoints in Phase 2b clinical study by OMS302

Cocaine is a noradrenaline re-uptake inhibitor that results in increased noradrenaline levels at the neuromuscular junction of the normal pupil; hence mydriasis occurs in the normal pupil but not in the noradrenaline-deficient Horner's pupil.

Apraclonidine in the diagnosis of Horner's syndrome

It may be preferable to give topical mydriatic drugs 30 to 60 minutes prior to induction of general anesthesia to assess adequacy of mydriasis before induction (5).

Caution with ocular phenylephrine

They result in conditions such as papillary mydriasis, miosis, and iridocycitis (an inflammatory reaction associated with aching and photosensitivity).

Eye injuries may be more serious than they look. (Specialists Are Not Always Available)

Manifestations included visual hallucinations (12 persons), mydriasis (10), tachycardia (six), dry mouth (five), agitation (four), nausea and vomiting (four), incoherence (three), disorientation (three), auditory hallucinations (two), combativeness (two), decreased bowel sounds (two), slurred speech (two), urinary retention (one), and hypertension (one).

Jimson weed poisoning - Texas, New York, and California, 1994

Different postoperative complications, such as silicone oil under conjunctiva, posterior capsule opacity, temporary ocular hypertension, iris and corneal neovascularisation, band keratopathy, postoperative mydriasis, and retinal redetachment, were observed in 5 patients (36%).

Outcomes of Vitrectomy in Pediatric Retinal Detachment with Proliferative Vitreoretinopathy

Detailed eye examination including fundus examination under mydriasis.

Surgical and visual outcome of phacoemulsification surgery (routine) and Micro-Phaco (Bimanual Phaco): a comparative study

Antipsychotics which have strong anticholinergic and/or antiadrenergic effects (such as chlorpromazine and fluphenazine) cause mydriasis and cycloplegia.

Psychotropic drugs and ocular side effects/Psikotropik ilaclar ve okuler yan etkileri

In one report patient did not have a documented blood methanol level but did have necrotic changes in the putamen bilaterally.10 Another case of acute methanol intoxication presented with weakness, blurred vision, mildly reactive bilateral mydriasis and progressive decrease in the level of consciousness.

MRI findings in methanol intoxication: a report of three cases

(17) Several studies have reported both ocular and systemic side effects (especially using atropine) in those children who have had a cycloplegic refraction, in addition to expected mydriasis and cycloplegia, as detailed later.

Retinoscopy in infancy: cycloplegic versus non-cycloplegic

Nicotinic receptor stimulation leads to tachycardia, hypertension, mydriasis, fasciculations and muscle weakness, as well as respiratory failure.