To solve a problem in which conventional detachable glasses can not be attached to front parts of a frame of recent glasses having a small lens diameter because the size is different.

A bridge 23 connecting lenses 21 of detachable auxiliary glasses 2 is provided with a projection piece 24 which is directed downward and a latch spring 27 which spread in a chevron shape; and the projection piece 24 is hooked to the bridge 12 on the side of the glasses 1 and the lock spring 27 is hooked to the lenses 11 on the side of the glasses or lens frames. Further, the bridge 23 is formed thick in width to provide the projection piece 24 which droops downward from the width-directional front side and latches the bridge 12 of the glass frame is provided, and press pieces 25 of the glass lenses 11 are projected from the rear side to a lower arcuate end of a blade 22.