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

Ophthalmologists might offer surgical procedures to fix presbyopia, such as corneal inlays, LASIK, photorefractive keratectomy and lens implants.

From Washington Post • Jul. 17, 2022

With age comes the loss of the flexibility of the lens, and a form of farsightedness called presbyopia results.

From Textbooks • Jun. 9, 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

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

From The Science of Human Nature A Psychology for Beginners by Pyle, William Henry