These people may be well served by having glasses for their specific purpose. It is important for patients to tell their optometrist their specific needs.
If reading glasses or computer glasses are made, patients need to indicate to their optometrist the exact distance where they read or the exact distance where their computer monitors are positioned. Each lens will have a certain range of use, or depth of field, but it is important for the optometrist to know what distance the patient likes to read or use a computer. These distances are not universal, and depend on many things, including arm length and habits that have developed by the patient. Does the patient generally hold reading material in his or her lap, or hold it 10 inches away? Is the patient generally using a laptop computer or a desktop? Not communicating these specific factors and needs to the eye doctor often will result in dissatisfaction with the specialty glasses prescribed and necessitate the glasses to be redone.
An experienced optometrist will know how to tailor special use glasses for each patient.