You may first notice it while trying to read a menu. Almost all adults get a vision problem called presbyopia, which means you have trouble seeing close up. It often starts in your early 40s.
Fortunately, inexpensive, nonprescription reading glasses, which have magnifying lenses, can help. You can find a pair at your local drugstore. If you already wear glasses or contacts for distance, consider bifocals or no-line progressive lenses.