A reduction in the ability to see at close range, due to a gradual loss of elasticity in the lens of the eye which occurs throughout life, but usually does not become apparent until a person reaches the mid-40s.
A condition in which an elderly person’s sight fails gradually, through hardening of the lens.
A reduction in accommodative ability occurring normally with age and necessitating a plus lens addition for satisfactory seeing at near, sometimes quantitatively identified by the recession of the near point of accommodation beyond 20 cm.
Farsightedness developing with advancing age as the lens of the eye becomes less elastic.
Loss of ability to see near objects due to aging of the lens of the eye.
Age-related, progressive loss of the ability to focus on close objects. Presbyopia worsens gradually until approximately age 65 years, when the eyes have lost almost all of their ability to focus on close-up objects. Presbyopia is usually treated with glasses.
Difficulty in reading at the usual distance (about one foot from the eyes) and in performing other close work, due to the decline with age in the ability of the eye to alter its focus to see close objects clearly. This is caused by gradual loss of elasticity of the lens of the eye, which thus becomes progressively less able to increase its curvature in order to focus on near objects.
The permanent loss of accommodation of the crystalline lens of the eye that occurs when people are in their 40s, marked by the inability to maintain focus on objects held near to the eye (i.e., at reading distance).
A medical condition that impacts individuals who are 40 years of age or older, characterized by the failure of the accommodative system responsible for focusing on nearby objects due to age-related stiffening of the eye’s lens.
The gradual reduction in the ability to focus the eyes for close-up vision is known as presbyopia. As people age, the eyes’ capacity to adjust weakens. This condition is typically observed around the age of 45, manifesting as difficulty in accommodating to read small text at a usual distance. Reading glasses fitted with convex lenses are employed to rectify presbyopia.
A middle-aged condition wherein the crystalline lens of the eye loses its flexibility and ability to adjust, leading to the need for reading glasses even though distance vision may remain unaffected.