in our near vision appear blurred. This process usually becomes apparent between the ages of 40 and 65. You will then need a pair of glasses to be able to read at a normal distance of approximately 35 [...] on provides a high contrast. In addition, lens coatings, cut-off filters and glasses with side protection can also help. Electronic magnifiers can improve vision by enabling the user to increase the contrast [...] value is expressed as the corrected visual acuity. What are cut-off filters? In contrast to sun protection filters, which reduce the overall visible light in a relatively even manner, cut-off filters only