Part of the normal process of aging. As a person becomes older, we begin to lose the flexibility of the natural crystalline lens of the eye and weakness of the ciliary muscle. Presbyopia actually starts at about age ten. Most people do not begin to experience the effects of presbyopia until their forties. This loss of flexibility limits the ability of the eye to change its point of focus from distance to near. Because of this normal process, people begin to wear bifocals or other reading correction. The one advantage of mild myopia (nearsighted, shortsighted vision)is the ability to remove your glasses after the onset of presbyopia and continue to read. Mild myopia (nearsighted, shortsighted vision)effectively counteracts presbyopia. Refractive surgery does not change effects of presbyopia.