What does mydriasis mean?
Definitions for mydriasis
mɪˈdraɪ ə sɪs, maɪ-my·dri·a·sis
This dictionary definitions page includes all the possible meanings, example usage and translations of the word mydriasis.
Princeton's WordNet
mydriasisnoun
reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs
Wiktionary
mydriasisnoun
The condition of having abnormally large and dilated pupils due to disease or drugs, particularly stimulants such as (meth)amphetamines, cocaine, etc.
Etymology: From mydriasis, from μυδρίασις, from μύδρος, possibly because the pupil is particularly bright or sparkling when dilated.
ChatGPT
mydriasis
Mydriasis is a medical condition characterized by the excessive or prolonged dilation of the pupil of the eye due to disease, trauma, or the use of drugs. Typically, it does not respond to changes in light levels. It can also be an indication of injury to the nervous system.
Webster Dictionary
Mydriasisnoun
a long-continued or excessive dilatation of the pupil of the eye
Etymology: [L., fr. Gr. .]
Wikidata
Mydriasis
Mydriasis is a dilation of the pupil, usually defined as when having a non-physiological cause, but sometimes defined as potentially being a physiological pupillary response. Non-physiological causes of mydriasis include disease, trauma, or the use of drugs. Normally, the pupil dilates in the dark and constricts in the light to respectively improve vividity at night and to protect the retina from sunlight damage during the day. A mydriatic pupil will remain excessively large even in a bright environment. The excitation of the radial fibres of the iris which increases the pupillary aperture is referred to as a mydriasis. More generally, mydriasis also refers to the natural dilation of pupils, for instance in low light conditions or under sympathetic stimulation. An informal term for mydriasis is blown pupil, and is used by medical providers. It is usually used to refer to a fixed, unilateral mydriasis, which could be a symptom of raised intracranial pressure. The opposite, constriction of the pupil, is referred to as miosis. Both mydriasis and miosis can be physiological. Anisocoria is the condition of one pupil being more dilated than the other.
Chambers 20th Century Dictionary
Mydriasis
mi-drī′a-sis, n. morbid dilatation of the pupil of the eye.—adj. Mydriat′ic.—n. a drug causing this.
U.S. National Library of Medicine
Mydriasis
Dilation of pupils to greater than 6 mm combined with failure of the pupils to constrict when stimulated with light. This condition may occur due to injury of the pupillary fibers in the oculomotor nerve, in acute angle-closure glaucoma, and in ADIE SYNDROME.
Numerology
Chaldean Numerology
The numerical value of mydriasis in Chaldean Numerology is: 2
Pythagorean Numerology
The numerical value of mydriasis in Pythagorean Numerology is: 9
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Translations for mydriasis
From our Multilingual Translation Dictionary
- mydriaseFrench
- bệnh nấmVietnamese
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"mydriasis." Definitions.net. STANDS4 LLC, 2024. Web. 25 Apr. 2024. <https://www.definitions.net/definition/mydriasis>.
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