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mydriasis

American  
[mi-drahy-uh-sis, mahy-] / mɪˈdraɪ ə sɪs, maɪ- /

noun

Medicine/Medical.
  1. excessive dilatation of the pupil of the eye, as the result of disease, drugs, or the like.


mydriasis British  
/ maɪ-, mɪˈdraɪəsɪs /

noun

  1. abnormal dilation of the pupil of the eye, produced by drugs, coma, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mydriasis

1650–60; < Latin mydriāsis < Greek mydríāsis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

She was attacked with fearful pain, and an enormous mydriasis with extreme amblyopia of the right eye; the fingers could hardly be counted when placed quite close.

From Project Gutenberg

In mydriasis by atropine hypermetropia of 3 to 4 dioptres results.

From Project Gutenberg

The mydriasis, amblyopia, and neuralgia lasted some time, while simultaneously the left eye could only read 19-17 type, but was painless.

From Project Gutenberg

Finally it must be added, that if the ophthalmoscopic estimation of refraction is to be exact, mydriasis by atropine is required, when, as is known, even emmetropic eyes may show a slight degree of hypermetropia.

From Project Gutenberg

Visual acuteness on both sides 5/12, the left slightly better than the right; emmetropia in mydriasis by atropine.

From Project Gutenberg