Portable presbyopic glasses

A pair of portable presbyopic glasses consists of presbyopic glasses lenses, a protecting cover, a hollow hinge shaft, a snap ring and the like, wherein the protecting cover is the framework of the whole presbyopic glasses; a shaft hole is formed in the protecting cover; the hollow hinge shaft for the lenses penetrates the shaft hole and is positioned at the hollow part of the protecting cover; the lenses can rotate around the hinge shaft which is arranged in the shaft hole of the protecting cover in an interference fit manner; the snap ring is mounted on the hollow hinge shaft and can rotate around the shaft; a spherical-crown-shaped convex point is arranged on the surface of each lens, which is at the farthest end of the shaft hole; and a spherical-crown-shaped concave pit is formed on the protecting cover corresponding to each spherical-crown-shaped convex point. When the lenses are rotated to completely enter the protecting cover, the convex points on the lenses exactly enter the concave pits of the prote