To provide front hanging spectacles which simplify the expansion and contrac tion mechanisms of a bridge segment of the conventional front hanging spectacles to the utmost while effectively utilizing the advantage that the bridge segment elongates and contracts elastically and is hooked to the front surfaces of lenses of the existing spectacles and make it possible to simply and easily assemble connecting mechanisms of a bridge mechanism and the lenses and coupling mechanisms of the hooks to be hooked to the existing spectacle lenses and additive glasses.

The mechanism is constituted of means of a spring type bridge, long from the side to side, which can be elastically changed in a span spacing and to which deformed rods at both ends can be connected in a parallel standing state through the right and left additive glasses; the inwardly facing hooks which have the deformed rods respectively penetrating the segments near the upper chord sections and lower chord sections on the outer side of both additive glasses and can be respectively hooked to the lenses of the existing spectacles and attaching caps which are attached from the inner flanks of the respective additive glasses and connect and fix both additive glasses, the bridge and the inwardly facing hooks to the deformed rods of the bridge and the deformed rods of the inwardly facing hooks, respectively.