Our standard single vision lenses cost just £20. We use D28 single vision lenses. These are 28mm wide D-shaped segments positioned vertically 3mm below the centre of the lens, and centred on your pupillary distance. We can also make up slightly wider 35mm single vision lenses, as well as executive single vision lenses that stretch across the entire width of the lens at no extra cost. Choose your customised single vision pair from huge collection glasses now..!!