At what age does presbyopia typically start affecting individuals?

Presbyopia is a condition commonly associated with aging, specifically affecting the ability to focus on close objects. This condition typically begins to manifest around the age of 40. The lens of the eye becomes less flexible over time, making it more difficult for individuals to change focus from far to near. As a result, people in their early forties may start to notice that they require reading glasses or experience difficulties with tasks such as reading fine print or threading a needle.

The age range for presbyopia is well-established in ophthalmological studies, and while some individuals may begin to notice symptoms a bit earlier or later, the average onset is around 40. This makes the chosen answer the most accurate based on the typical timeline for presbyopia's effects on vision.