Various Issues in the Manufacture of Progressive Power Glasses

Abstract

Progressive power glasses should be selected foremost in the correction of presbyopia; however, many Japanese feel negative toward them. This is because there are problems in those who wear, prescribe and manufacture glasses: in wearers, it is a lack of understanding; in technicians who prescribe and manufacture glasses, it is a lack of technology. Even if progressive power glasses are used, there are numerous instances in which the power for reading becomes inappropriate owing to inaccurate optometry of the power for distance. In addition, faulty frame adjustment is all too frequent. It is also problematic that individuals who do not know the basics of glass manufacture are involved in optometry. It is absolutely necessary to restructure the Japanese optometric system itself, in order to realize proper evaluation of progressive power glasses.