Eyesight disorder caused by the aging of the crystalline lens, which with time thickens and loses its suppleness. As the crystalline lens becomes more rigid, it changes shape less easily and the subject sees less and less well in near vision. Refractive condition in which there is a diminished power of accommodation arising from loss of elasticity of the crystalline lens, as occurs with aging. Usually becomes significant after age 40.

Related Links

Presbyopia — What Causes It? — How To Treat It


Presbyopia — National Eye Institute

What Is Presbyopia? – American Academy of Ophthalmology

Presbyopia – EyeWiki

Eye Treatments — Presbyopia

Presbyopia ? Symptoms and Treatments of Presbyopia : Bausch + Lomb

Presbyopia – Symptoms and causes – Mayo Clinic