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presbyopia

[prez-bee-oh-pee-uh, pres-]
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noun Ophthalmology.

farsightedness due to ciliary muscle weakness and loss of elasticity in the crystalline lens.

Origin of presbyopia

1785–95; < Greek presby- (combining form of présbys old, old man) + -opia
Related formspres·by·op·ic [prez-bee-op-ik, pres-] /ˌprɛz biˈɒp ɪk, ˌprɛs-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for presbyopia

Historical Examples of presbyopia

  • Still another defect of vision is known as presbyopia or farsightedness due to old age.

    The Science of Human Nature

    William Henry Pyle

  • "Old sight," known as presbyopia, is a common defect of vision in advancing years.

    A Practical Physiology

    Albert F. Blaisdell

British Dictionary definitions for presbyopia

presbyopia

noun

a progressively diminishing ability of the eye to focus, noticeable from middle to old age, caused by loss of elasticity of the crystalline lens
Derived Formspresbyopic (ˌprɛzbɪˈɒpɪk), adjective

Word Origin for presbyopia

C18: New Latin, from Greek presbus old man + ōps eye
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
Word Origin and History for presbyopia
n.

"far-sightedness brought on by age," 1791, medical Latin, from Greek presbys "old man" (see presby-) + -opia, from ops "eye" (see eye (n.)). Related: Presbyopic.

Online Etymology Dictionary, © 2010 Douglas Harper
presbyopia in Medicine

presbyopia

[prĕz′bē-ō′pē-ə]

n.

Inability of the eye to focus sharply on nearby objects, resulting from loss of elasticity of the crystalline lens with advancing age.
Related formspres′by•op′ic (-ŏp′ĭk, -ō′pĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.