Presbyopia (loss of reading vision)
The lens of a youthful eye flexes to change shape (“accommodate”) when we change from focusing on something in the distance to something closer, like a book. Over time, the eye’s lens gradually loses its flexibility and ability to change shape to see close objects. Bifocals or reading glasses are the traditional prescription for remedying this “presbyopic” loss of accommodation.
However, modern technology has made it possible to exchange the eye’s inflexible natural lens for a “lifestyle lens” designed to compensate for these cheangs in the eye and improve functional vision at all distances.