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Noun: presbyopia  ,prez-bi'ow-pee-u
  1. A reduced ability to focus on near objects caused by loss of elasticity of the crystalline lens after age 45
    - farsightedness

Derived forms: presbyopias

Type of: farsightedness [N. Amer], hypermetropia, hypermetropy, hyperopia, long-sightedness [Brit]

Encyclopedia: Presbyopia