Presbyopia (noun)

1. A gradual loss of the ability to focus on close objects, occurring typically in middle age as a result of aging of the lens of the eye.
2. A vision disorder that affects many people as they grow older, making it difficult to focus on close objects.
3. A normal age-related change in the eye that leads to decreased ability to focus on nearby objects.

Origin:

Late 17th century: via latin from greek presbys 'elderly person' + ōps, ōp- 'eye'.

Examples:

1. Presbyopia is a common condition that affects many people over the age of 40.
2. Reading glasses are a common solution for presbyopia.
3. Laser surgery can correct presbyopia by reshaping the cornea.
4. Presbyopia can be corrected with eyeglasses, contact lenses, or surgery.
5. As people age, the lens of the eye becomes less flexible, leading to presbyopia.