presbyopia

[ prez-bee-oh-pee-uh, pres- ]

noun

, Ophthalmology.

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

presbyopia

/ 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

Derived Forms

• presbyopic, adjective

Other Words From

• pres·by·op·ic [prez-bee-, op, -ik, pres-], adjective

Word History and Origins

Origin of presbyopia¹

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

Word History and Origins

Origin of presbyopia¹

C18: New Latin, from Greek presbus old man + ōps eye

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg