Varifocal glasses / glasses

Different people should have different glasses; even the same people should change different glasses because of the changing glasses degrees during his lifetime. So we design the new kind of ‘I See You’ Glasses. The lenses are different from the traditional ones. The two membranes made by special material contain special liquid. The lenses’ degree of curvature can be changed by controlling the thickness of the liquid. For people who have hypermetropia, it can become convex lens worked as worked as hyperopia glasses, for people who have nearsightedness, it can be concave lens acted as short-sighted glasses.