Accommodation is the ability of the healthy eye to focus on both near and far objects. The relaxed state of the ciliary muscle is distance vision, and the flexed state is near vision.
As you age, the lens in your eye becomes less flexible. This makes accommodation more difficult and brings on "arms are not long enough to read" symptoms. Someone may be both myopic and presbyopic, and have deficits to both near and far vision. Your Full Prescription will have an "Add" section specifying bifocals or multifocals if you have diagnosed presbyopia, or if your doctor thinks it best to reduce eye strain.