There Is A Saying That Myopic People Do Not Get Presbyopia, Is That True?
What is myopia?
Myopia is characterized by blurred vision at far and clear vision at near. In the absence of other adjustments, the parallel light from far into the eye through the pupil, focusing in front of the retina, the retina can not form a clear image, this is myopia.
Presbyopia. Looks like hyperopia
Presbyopia is also called presbyopia, probably because of the word "old", we all think that this is a problem of the elderly. In fact, it appears earlier than most people think, after the age of 30, most people begin to develop presbyopia. Myopia is due to the abnormal diameter of the eyeball, and presbyopia refers to the growth of the lens with age, elasticity becomes poor, ciliary muscle no matter how tense can not make it relax; Or the ciliary muscle itself, which is a sign of aging in the body. It tells you that your eyes are aging.
Got myopic, won't presbyopia?
Reading as a normal physiological phenomenon, everyone will happen to the appropriate age, just because of myopia wear myopia (concave lens) to correct the mirror, original relaxing to age, ten-fold increase eye drops, aging degree to offset the effect of myopic degree (the equivalent of on the concave mirror lens), so there will be a glasses to see close objects more clearly. For example, the original 100 degrees of myopia, to presbyopia age, 100 degrees of presbyopia, then close with the eyes without glasses can also see, at this time will give a person an illusion that they do not have presbyopia, but the reality is not.
Presbyopia is not farsightedness
Hyperopia occurs when the curvature of the cornea and lens is too small or the eyeball is so short that light ends up focused behind the retina, making it difficult to see clearly. Presbyopia, it is to see far, near different objects when the ability to adjust the decline, causing unclear vision. Hyperopia and presbyopia may seem to have the same treatment, but they are not the same thing. Hyperopia often occurs in children groups, and presbyopia generally occurs in the elderly groups, the degree of correction increases year by year with age, and as a result of the decline in adjustment ability, even if the degree is not high, close to a certain distance of the object can not be seen through their own regulation, must move a few farther.
Presbyopia is irreversible. The better the vision when young, the earlier the presbyopia, the more obvious the symptoms will be. Therefore, when there is nearsighted difficulty and fatigue, it is necessary to go to a professional hospital for ophthalmic examination and reading glasses.
