Vari+San Pisa 2.5 Glasses 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 diopter correction.Vari+San Pisa glasses have a metal frame with the end of the temples in black.Diopter: 2.5