Spectacle magnifiers are really simple magnifying lenses fitted into a spectacle frame. They are usually monocular ( with the weaker eye blanked out) and they demand that the patient holds the print very close to their eye. Below is a video clip of a patient using such aid. With it he reads all his correspondence and even his daily newspaper.
Success with these aids require the patient to be well motivated and adaptable as the print has to be held very close to the eye. It is easier if the head is held still and the print is moved across the lens in a sideward motion. It is also very important to use a well placed task lamp.