There is a normal phenomenon, a vision problem called presbyopia when people are going to 40s. Because man’s eye muscles lose the essential elasticity and they can’t see the object clearly nearby. A very significant proportion of the world’s population will at some point notice deteriorating vision combined with age which will require wearing reading glasses to read, this is normal, and in medical terms is a condition known as presbyopia, which is not a disease, and neither is it preventable. Presbyopia is not the same as long or short vision that requires prescription lenses. It is only a natural part of aging. Don’t worry. Choosing the best reading glasses can save your vision. (more…)