After the age of 40 everyone begins to experience an age-related loss of accommodation ability –so-called presbyopia. It results in the necessity to use glasses for close-up work or reading.

Close-range vision deterioration results from a decreased eye accommodation ability or lack thereof. It is a progressive physiological process caused by the ageing of the body, leading to a decrease in intraocular lens elasticity. Presbyopia affects everyone, regardless of whether they are short-sighted, far-sighted, or astigmatic, or whether they do not have any vision defect at all.
This means that even after your refractive error is corrected, you will still need to wear glasses, but only for reading or close-up work.