Around the age of 40-45, objects at a person’s reading distance become blurry, threading needles or fine handiwork becomes difficult, reading books is easier when held further away. As we get older, we begin to notice that objects in the middle distance are becoming blurry as well, making it difficult to read the computer screen or see prices in the supermarket. This phenomenon is called Presbyopia, which is the age-related hardening of the crystalline lens in our eye, making it difficult to bend light rays and focus them clearly on the retina.
Reading glasses will sharpen close vision but will make distance viewing blurry. When someone requires both distance and near vision correction, multifocal lenses provide an advanced solution.