Superfocus is a dynamic, adjustable focus eyeglass that treats presbyopia. Each Superfocus lens is actually a set of two lenses, one flexible and one conventionally firm. The flexible lens (near the eye) has a transparent distensible membrane attached to a clear rigid surface. The space between the membrane and the clear rigid surface holds a small quantity of clear optical fluid. As a user moves the slider on the bridge, the fluid is pushed forward to alter the shape of the membrane, thereby altering the flexible lens. Changing the shape of the flexible lens changes its focus, mimicking the performance of the natural lens in youthful eyes.