While these strategies are useful and are to be encouraged, they alone may not allow the person to read regular-sized print or see well enough in the distance to enjoy, for example, a visit to the movies or a sports event. Properly prescribed optical devices and thorough instruction in their use, may dramatically improve the clarity of vision to a point where many of the above activities can once again be fully enjoyed. The following pages describe the general categories of optical devices and list the advantages and disadvantages of each type of device. When placed on a page, this type of magnifier is automatically in focus for reading. Advantages Inexpensive and readily available.
Focal distance is set by simply placing the magnifier on the page.
Good for those with poor motor control. Disadvantages Book bindings may present a problem, as the magnifier may not remain in a stable or fixed position.