Farsightedness resulting from a reduced ability to focus caused by loss of elasticity of the crystalline lens with age

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"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 .

Wiktionary Word definitions in Wiktionary
n. inability of the eye, due to ageing, to focus on nearby objects; farsightedness

Wikipedia Word definitions in Wikipedia
Presbyopia is a condition associated with aging in which the eye exhibits a progressively diminished ability to focus on near objects. The first signs of presbyopia – eyestrain, difficulty seeing in dim light, problems focusing on small objects and fine ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Presbyopia \Pres`by*o"pi*a\[NL., from Gr. ? old, n., an old man + ?, ?, the eye.] (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 ...

WordNet Word definitions in WordNet
n. farsightedness resulting from a reduced ability to focus caused by loss of elasticity of the crystalline lens with age