Changeable spectacles

The utility model relates to a pair of changeable spectacles suitable for wearing by people who have presbyopia, nearsightedness and people who are often in contact with traces of X ray. The structure of the spectacles is that two photon lens openings [2] are made on the anterior layer [1] of a black cowskin bag which covers the spectacles [5]; the back of the anterior layer [1] is coated with a permanent white layer [3]; the permanent white layer [3] is stuck with a transparent terylene adhesive tape [4]; a quartz plate [6] is fixed on the rear layer [7] of the cowskin bag leaning on the spectacles [5]; the rear layer [7] is provided with a photon lens [8], a nose bridge bracket [10] and a child and mother buckle [9] fixed on the upper mouth of the cowskin bag. The spectacles can prevent eye damage and fatigue caused by X ray produced by TV, and can see both near and far.