Definitions for mydriasis
mɪˈdraɪ ə sɪs, maɪ-my·dri·a·sis

Princeton's WordNetRate this definition:0.0 / 0 votes

1. mydriasisnoun

   reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs

WiktionaryRate this definition:2.0 / 1 vote

1. mydriasisnoun

   The condition of having abnormally large and dilated pupils due to disease or drugs, particularly stimulants such as (meth)amphetamines, cocaine, etc.

2. Etymology: From mydriasis, from μυδρίασις, from μύδρος, possibly because the pupil is particularly bright or sparkling when dilated.

ChatGPTRate this definition:0.0 / 0 votes

1. 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 DictionaryRate this definition:0.0 / 0 votes

1. Mydriasisnoun

   a long-continued or excessive dilatation of the pupil of the eye

2. Etymology: [L., fr. Gr. .]

WikidataRate this definition:0.0 / 0 votes

1. 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 DictionaryRate this definition:0.0 / 0 votes

1. 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 MedicineRate this definition:0.0 / 0 votes

1. 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.

Matched Categories

1. • Dilation
   • Reflex

How to pronounce mydriasis?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say mydriasis in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of mydriasis in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of mydriasis in Pythagorean Numerology is: 9

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=mydriasis
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Mydriasis
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/mydriasis
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=mydriasis
6. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=mydriasis