presbyopia

Definitions

  • WordNet 3.6
    • n presbyopia a reduced ability to focus on near objects caused by loss of elasticity of the crystalline lens after age 45
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Webster's Revised Unabridged Dictionary
    • Presbyopia (Med) A defect of vision consequent upon advancing age. It is due to rigidity of the crystalline lens, which produces difficulty of accommodation and recession of the near point of vision, so that objects very near the eyes can not be seen distinctly without the use of convex glasses. Called also presbytia.
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Century Dictionary and Cyclopedia
    • n presbyopia Diminished power of accommodation for near objects, incident to advancing years, and due to progressive loss of elasticity in the crystalline lens.
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Chambers's Twentieth Century Dictionary
    • n Presbyopia pres-bi-ō′pi-a long-sightedness, together with diminished power of distinguishing things near, common in old age—also Pres′byopy
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Etymology

Webster's Revised Unabridged Dictionary
NL., from Gr. old, n., an old man + , , the eye
Chambers's Twentieth Century Dictionary
Gr. presbys, old, ōps, ōpos, the eye.

Usage

In literature:

It must be old sight (presbyopia).
"Scientific American Supplement, No. 787, January 31, 1891" by Various
Still another defect of vision is known as presbyopia or farsightedness due to old age.
"The Science of Human Nature" by William Henry Pyle
Old sight, or presbyopia 215 32.
"A Treatise on Physiology and Hygiene" by Joseph Chrisman Hutchison
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In news:

Retinal Physician Article Submission Guidelines-Prescribing for Astigmatism and Presbyopia.
Superior near vision and reading speed compared to other presbyopia-correcting IOLs .
00 AM on 11/26, issued at 2:39 AM Alma, GA Baxley, GA Blackshear, GA Bristol, GA. Cornea Inlay Improves Near Vision in People With Presbyopia.
It's called presbyopia , and let's not sugarcoat it.
Recently I came across the following word: presbyopia.
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