Faulty vision that cannot be corrected by eyeglasses or contact lenses is called low vision. A variety of tools are available to help a person with low vision read and work. Some people with low vision are helped with magnifier glasses in the form of eyeglasses or hand-held glasses that enlarge type in books and newspapers.

 Computer users can benefit from closed-circuit television-reading machines that use a zoom lens to enlarge print on a computer monitor. Printers also create text in large type that is easier to read. And some computers are equipped with a voice output that reads the text aloud.