An eyeglass lens piece (10) configured for both forward and rearward viewing by a user comprises at least one curved transparent section extending in front of, above, between and below the user's eyes and a distance laterally from the sides of said user's eyes to the approximate sides of the user's head, a housing (11) arranged at an edge in the lower section (12) of the lens piece (10), projecting from the lens piece, and a mirror (15) arranged in the housing in a position offset from the curved transparent section.