Vari+San Reading Glasses Vienna 2.5 diopters are auxiliary glasses that help to facilitate the reading of 2.5 diopters. These glasses are suitable for people with presbyopia or eyestrain without astigmatism, they have a magnifying effect to facilitate vision. In order to avoid the symptoms of eyestrain, it is advisable to use glasses that allow correction of diopters.Vari+San Viena glasses have a synthetic resin frame with brown tones and red temples.Diopters: 2.5