Suncloud Readers combine a 100% Polarized polycarbonate lens with a reading segment (+1.50, +2.00 or +2.50) placed low in the frame for use when you need it. Suncloud Polarized lenses are manufactured with filters to provide protection from the sun's harmful UV rays. Suncloud polarized lenses selectively filter horizontally reflected, visually interfering light waves know as 'glare'. The elimination of direct and ambient glare results in superior visual clarity, definition, color transmissions and optical comfort. Suncloud readers make it easy to read outdoors in the sun.