Abstract: The eyeglasses include a pair of rims carrying bifocal lenses and interconnected by a bridge to define a nose-receiving space therebetween and further includes a nose piece, mounted between the rims, either as an integral part of the bridge or as part of a separate, detachable unit. The nose piece is connected to a push-push mechanism which is arranged so that a wearer, with the nose piece resting on his nose, can conveniently move the lenses up and down between a normal position and raised a position where the lower reading portions of the lenses are in front of the eyes by simply applying a momentary downward force on the bridge, the rims or the temple pieces.