Abstract: A clip for holding an auxiliary eyeglass unit on a primary eyeglass unit includes a retaining member and a supporting member. The retaining member includes an upright front plate, an upright intermediate plate unit, and a horizontal top plate interconnecting upper ends of the front plate and the intermediate plate unit. An upper end of the auxiliary eyeglass unit is disposed among the front plate, the intermediate plate unit and the top plate. Front and rear projection units are formed respectively on the front plate and the intermediate plate unit, and perforate into the auxiliary eyeglass unit. The supporting member includes an upright rear plate and a horizontal connecting plate interconnecting the intermediate plate unit and the rear plate. An upper end of the primary eyeglass unit is received fittingly within a space defined by the intermediate plate unit, the rear plate and the connecting plate.

Abstract: A pair of auxiliary eyeglasses is attached to a pair of primary eyeglasses, and has a bridge including a rigid connecting tube that is disposed between two lens units. Two movable rods are connected respectively to the lens units, extend respectively through two open ends of the connecting tube, are movable within the connecting tube, and engage respectively and fittingly the non-circular holes in the inward flanges so as to prevent rotation of the movable rods relative to the connecting tube. The auxiliary eyeglasses further include two coiled compression springs, each of which is disposed between the outward flange of a respective one of the movable rods and a respective one of the inward flanges of the connecting tube so as to bias the movable rods to move toward each other.