Managing dispensing non-tolerances.

The article focuses on a study regarding causes for non-tolerance of spectacles by patients, provides guidance for achievement of a resolution, and presents a chart for the same. Topics discussed include depletion of near vision area along with progressive power lenses (PPLs) and focal range shortening may result in spectacle non-tolerance, selection of frame fitting and lens design should match requirements of patients, and resolution of non-tolerance lies in understanding issues of patients.