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 filter out a specific area of the spectrum [...] polarisation filter improve my vision? The light rays emitted from a light source oscillate in waves which are scattered in all directions. A polarisation filter in a spectacle lens filters out all oscillating [...] components of light are able to pass through the cut-off filters virtually unhindered. The areas between transmitted light (transmission) and filtered out light (absorption) are sharply distinct from one another