presbyopia

American  

[prez-bee-oh-pee-uh, pres-] / ˌprɛz biˈoʊ pi ə, ˌprɛs- /

noun

Ophthalmology.

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

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presbyopia British  

/ ˌprɛzbɪˈəʊpɪə, ˌprɛzbɪˈɒpɪk /

noun

1. a progressively diminishing ability of the eye to focus, noticeable from middle to old age, caused by loss of elasticity of the crystalline lens

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Other Word Forms

• presbyopic
  adjective

Etymology

Origin of presbyopia

1785–95; < Greek presby- (combining form of présbys old, old man) + -opia

Example Sentences

In addition to studying techniques to help treat cataracts, the researchers are applying their methods to study other major eye conditions, including presbyopia and myopia.

From Science Daily • Sep. 21, 2023

This modest effect might be most useful for people in the early stages of presbyopia, who don’t need much corrective help.

From Washington Post • Jul. 17, 2022

After the age of 40, many people start developing presbyopia, a medical term rooted in the Greek phrase for old eyes.

From Scientific American • Feb. 15, 2022

I am in my 50's and I have presbyopia.

From New York Times • Mar. 7, 2018

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

From A Practical Physiology by Blaisdell, Albert F.